There are many traders in exchanges and they are trading their bitcoin all the time not necessarily leaving bitcoin altogether. That can be normal buying and selling at the same time so there is nothing new with that. Now, it would be difficult if no one will be selling bitcoin even the traders. This is just part of the dynamics of the market. Bitcoin for sure is growing strong at this moment and there is that big chance that it can go up more into the so-called "moon" like what many are saying.

For who not buy is still am option to buy now bitcoin, for who buy on last bull run and hold should hold more, and even now people should get in because even if they get out from crypto can't get enough money if they have small bitcoin.

Well, anyone has their personal choice of buying or either selling. They have their own belief and decisions. Some of them might need to sell their coins for an important purpose. As for me, as long as we can hold while the market situation is going better, then it's our choice. But if we're contented with the profit that we have set, then it's our choice to sell.

You are the only who can make a "better answer" on your own concern.

Try to analyzed things and determined the "what if?".

Different people have different approaches and strategy. We don't know why they are buying, why they are buying, why there are hodling etc. In other words, don't bother them and focus on your own.

Honestly, no one can give you a perfect answer op. You will have to decide for yourself since it is your money that you are risking which is why you need to do your research. Do you wish to HODL or day trade?

Do you have a problem with losing all of your money? Take and your time and decide whether to get in or out.

It is the size of your pocket which will decide this nothing else! If you have extra income and extra savings, you should get in. If you don't have resources, it is better not to get in with peak.

For those who were stuck for quite some time now, say $10k levels, I wouldn't let them call it quits and just wait for the next coming months. With a lot of things lined up for bitcoin I don't think it will be difficult for the price to jump the said price range and establish a comfortable footing from there. Getting in on the market is also fine, too, though do it during the lows of the day in order to not get stuck for too long or bear huge losses should the price climb back down abruptly.

We have different call on this market if its the right time for others to get out, they will do as they please and what they think suits them. And to those that abandons the market, they might or not might know what they do. This market is full of emotions if you are weak on it, you will have an exit so early. But if you had experienced the bear market, I think that will make you a better person when it comes to decision making because you have witnessed the baddest and you are witnessing currently the good days. Opportunity as it is for enthusiasts and believers.

This would be just my opinion. If you are a newbie who have luckily bought BTC at around 3,000-4000$ (or even 5,000$) then I think this is the best time for you to cash out your profits before you even become more confident without any knowledge of doing what to do next. Of course the consequences of you doing that is you being left out when the prices starts moving upwards after you sell your holdings but it's better than being trapped with 0 gains from the months you have hodl your position. Just my advice with the last bear market I hope you learned from the past newbies who have blamed it on cryptocurrencies on why they lose money even though its in their own decision making.

Somehow it looks like we are always at the begininig when it comes to Bitcoin. Although now there are many experienced users, there are also newbies too so it seems like we are always learning the basics.
Bitcoin is volatile, price is changing all the time although sometimes it doesn't look so. So there are periods when the price is up and when it's down and such phases come in intervals. So what you will decide in certain moment it's up to you and that doesn't mean that opportunity that you have is one time only.