Trading is very risky for those who do not understand the strategies and how to trade well. Especially for someone who only relies on feeling and luck, it's a fatal mistake. Trading must be based on proper analysis, to determine the right timing for entering and leaving the market.
For the second option, I agree. Setting aside a salary to buy bitcoin regularly, for example every month, can be one good strategy. This strategy is very effective for beginners, without thinking about price changes, just need consistency to buy bitcoin according to the specified percentage, this method is known as Dollar-Cost Averaging (DCA). In this way, we can reduce market risks as well as Bitcoin investments over time.

There are many ways on how to make your money grow. Yes, gambling is one, someone can make their money grow through bitcoin gambling and also gambling is available to other cryptocurrencies which make it more accessible. Some people can make money with just sitting and relaxing at home. They just have to bet online and win or lose.

Many industries are saying that bitcoin is pure gambling. But why they say so? Because commodities such as gold has its value of itself but bitcoin does not have.

I think bitcoin us an investment class and not gambling. People cash in their money to crypto because they want to have an investment. But some just putting money in crypto for the purpose of gambling. For me it is up to the investor if they will use crypto for gambling or investing.

And also He can Use as capital in Gambling in which If Luck He might double or tripple the Bitcoin he holds.
Anyway this is very risky so better be aware of losing at any chance.

Also try to Invest in IEO but be careful for also this is risky though thats part of investing.
Lol Bounty hunting wont Give you Bitcoin at all time mostly it is altcoin that they will pay you.

And also there are no rooms for this now because only few who pays true and majority are shit and scams.

There are many ways bitcoin can expand and one of them is to be a long-term investor or trader. I've known a lot of bitcoin users who use these 2 approaches to grow their bitcoin.

To gain more bitcoin you need to be a daily trader. Put half of it in your wallet and trade or spend the other half to double or triple it again if you succeed and double your bitcoin.
I've read some blogs about it growing in bitcoin, and some of it is very practical; https://paxful.com/blog/make-money-with-bitcoin/

Its not so easy because alot of things are on the line for you to grow your Bitcoin holdings. One way that I feel can be used is investing in alts that have good concepts, team, achievable goals and low cap and hope it brings good returns depending on how large your take profit is. Another way is to buy Bitcoin lower and sell higher. All these requires patience, good trading knowledge and research skills.

Circulation: Buy and sale to maintain liquidity. Your success are based on your client base and liquidity.  Generally once you get to certain size, you no longer need to advertise.  Word of mouth is all you need to succeed.
Mining: It is getting hard to get 60 BTC per day. Alot of facility management is required and it currently costs around $2500/btc to mine using off peak electricity, assuming you are doing this solo and facility is free.  You can start by hosting rent out ASICs for those who are interested in mining, or if you were early BTC adopter do your duty and help secure our networking by mining. 
With assistance of corrupt government official, it is very hard to loss money if you mine; if you can spent about $10mil ($8 mil for asic and $2mil for facility) which is small for those who were in the game early.  it costs around 5000 BTC but you get around 100-65BTC/day depends on fees and other factors.  Generally you break even at beginning of 3rd month. 

IMHO Mining is your best route if you have coins, do not have to import ASICs, able to setup large scale mining somewhere among rice patties; and have access to corrupt government officials.

*Buy at cheap price, sell at a high price
*Do trading
*Holding

All of these things are common but we can't just say that it will grow or even double/tripled in just a day. No, It takes time as well. Thus, if we are an impatient person, I'm no longer expecting this to happen and grow your bitcoin but instead seeing you losing.

I recently decided to start working with BTC and try to increase the amount of BTC. Since I have little experience in this matter at the moment, I decided to study a little the possibility of trading BTC on a crypto exchange. At the moment, I chose a new so far little-known crypto exchange and decided to try to increase the number of my BTC on it. My strategy at the moment is this, I buy a token of the platform on which I trade for BTC, then I place an order to buy a token for BTC cheaper than the current price and wait until the order is triggered. After, when the limit is triggered, I sell the purchased token at the current price and, as a result, I have a profit in BTC from 14% to 54%. Since this opportunity occurs on average once a day, at the moment I am increasing my amount of BTC not very quickly, however, there is a profit of about $ 100 per day, sometimes $ 10 - $ 20. Since I am new to this business, I think this is a very good result.

Trading is very risky but if you learn and have knowledge about it, I believe you can accumulate bitcoin through trading. I did trading also but only small capital and just play a buy and sell and always learn the market movement and also patience is very important to avoid loses.