Investing in Bitcoin either short term or long term does not really matter if now is the opportunity or not. With cryptocurrency especially Bitcoin, every time or day is an opportunity to invest in. All you need is knowledge and understanding on how the entire bitcoin ecosystem works and the contributing factors affecting the market price of the coin. With this, you can develop strategies to meet your investment plans.     

That is just normal. They are traders and they need to get their profit every time the market allows them to do so. If you are an investor or just an hodler, then you can wait until the market price hits a new all-time high. But you cannot force that to traders.

I think it's a decision that should be made as to what you want to achieve? If you want to be operating with certain amounts to generate some achievements due to good operations is a way, of course, that implies that you must understand the market and be somehow profitable, which is very difficult to achieve because the experience has a lot to do .

If you want to just invest, it would be buying right now! and wait for the bitcoin market to begin its bullish trend, which is what anyone who does not want to live the stress of the market can do, should only check the market, follow up and wait without selling, because there something that is sure, is the bullish trend, it is not known when it will happen, but it is a way to operate.

Depending on what you want to achieve, whether in the short or medium term is to operate constantly following the direction of the market and the other is to invest as large investors do.

It has decreased 8200 usdt to 7201 now, should I be investing more OR withdraw all my amount, what would be your opinion?

I do not want to disappoint you, but in my glance, Bitcoin has become a means for speculation in the market and nothing more. On Bitcoin you can earn a fortune by various manipulations with news, stock exchanges, stable coins, and so on. That's all. People are driven by greed and Bitcoin allows it to be realized.

Hold on to your hats, Bitcoin ATMs are coming around the world.  
Opportunities for PRE-IPO shareholders to take advantage of the technology.

You can get out anytime you like but don't spread a fud without a prior evidence as you are only misleading the newbie investors. Don't ever use the incorrect word especially the abandon one as bitcoin is still alive because the crypto lovers never abandon it.

If you really understand that it is the right time to buy more and bitcoin is not only a bubble then it's better that you should pull out the abandon one, so others will be able to easily understand what you like to impose. Though we have the freedom to express what we really feel about the current situation of the market but I just don't like any unnecessary word that will likely mislead us especially if we don't know yet if how the market work.

i agree bitcoin is not really a bubble or another finacial failure it's already proven
for those who know more about bitcoin this is really advantage and good opportunity

Bitcoin and crypto is always an opportunity for me to get in. There is a lot of choices and patience is the only thing you need to have to get what you wanted in this market. Crashes and FUD will make you doubt everything but just look at how many times those smart people cash out everytime btc starts a huge rally.

It was an oppourtunity to get out when bitcoin's price reached above $8K but as now it's around $7K again it's time to get in.
We have always seen a small bear before large bull and small bull before large bear. It's called bear trap and bull trap respectively.
It's the large players last attempt to make profit in expanse of smaller investors.