for now producing bitcoin only using ASIC that off course need huge amount of energy but maybe in future will be other mechanism to solve this problem i dont know maybe using PoS or masternode or something like that

Bitcoin mining, or more precisely proof-of-work, is specifically designed to consume energy. If you can develop a way to compute a SHA-256 hash without consuming energy, then you may become the richest person on the planet.

Because of the economics of mining, these are the only ways to lower the consumption of energy used in bitcoin mining:

• 1. Increase the per hash cost of mining, perhaps by
  
  • a. increasing the cost of energy, or by
  • b. other means such as taxes.
• 2. Reduce the value of the block reward, perhaps by
  
  • reducing the subsidy or the transaction fees, or by
  • reducing the value of a bitcoin.

Note that increasing the efficiency of mining, specifically hashes per joule, has no effect on the consumption, again because of the economics of mining.

No other way to produce bitcoin unless through mining and in doing that there is the need for usage of high power consuming computers which is one of the major problem facing the mining farms and the general ecosystem.

Much debated but ultimately debunked topic of environment and crypto mining. Point in short is that the carbon footprint of the miners is nowhere comparable to other bigger carbon footprints from many things in this world that cannot be stopped.

No. If that was possible then you have had a breakthrough already.

You CANNOT mine with CPU and GPU in today's difficulty. That statement would have been correct if the year was 2009-2010. The mining sector became so competitive post-2013 that indie miners died out and never got a proper change to even sell away their rigs and get some money back.

The devices that you need are ASICs today and not just one but hundreds of them.

for those who have large capital do not need to mine they only need to spend capital and buy bitcoins for assets and store them in their wallets

The high power required for the networks goes by hand with time... The first coins were mined only with one CPU, but now the mining business has grown too much, there are big pools with a lot of hashing power, and this makes solo mining almost impossible.

Miners have a high energy cost and there are some solutions for this, like the one that ETH will adopt this year, and that solution is to move from PoW to PoS

High level of energy consumption is not the reason, high specs required to mine bitcoins which are powered by high watts means they are spending electricity but do we actually need to worry about the electricity? which is abundant and can be manmade while we are still using petrol cars and trucks all the days.

Unfortunately, there's none at this point. There used to be a time wherein bitcoin can be mine with ordinary pc though, but currently only power hardware (ASIC) is capable of mining bitcoin. As for the high energy consumption, this has been debated many times already and has been debunked by many experts in that field. So if you read some articles around the net about it, just ignore, people will always find a flaw in every successful invention throughout mankind's history.

There are no other means to produce bitcoin apart from using specialized computers that are specifically designed to compute the algorithm to which bitcoin is based on. While proof-of-work is as power hungry as it gets, it ensures maximum security over the network and eliminates things that can potentially harm bitcoin as a whole. Moving over towards a new algorithm such as PoS, as many people have suggested over the years, would be tedious, and will surely be met with extreme opposition especially from those who invested millions to these machines to mine bitcoin.

As for the problem of 'using too much energy,' miners are mitigating the harmful damages to the environment by resorting to renewable energy sources such as hydroelectric power. It's a step towards the right direction. The only thing that isn't really doing much on their part are private companies and governments that are still too reluctant to develop power plants harnessing renewable sources because coal is still cheaper and easier to get.

---

If you're looking for ways to mine personally, I suggest you to not put yourself into too much stress unless you have hundreds of thousands of dollars to buy mining equipment. It's just not worth it to solo mine with outdated, dedicated machines, moreso computers with graphics cards that will surely degrade and be worthless and not paying itself even after its end of life due to mining.

I'm not expert about mining machines and other things use to mine bitcoin, but I was thinking if mining bitcoin is highly electric consumable, and personal computer is not recommendable  for bitcoin mining could we use our home appliances be installed with bitcoin mining machines to lessen the electric consumption ?  I think if those things happen all appliances maker will earm triple, because they can sold their home appliances but they can earn bitcoin also without paying electric consumption.