I'm try to trading professional trading
No, your trading is regular retail trading, professional traders are mostly market makers and they don't trade with their own money.
I mean if we see "when is market condition bear" then i would be perfect call to buy top100 crypto. But anyone suggestion in this situation when we fall in bear market.
As far as buying in a bear market is concerned, this is a good strategy and you are on the right track. But how to guess where the bottom of such a market and the ideal option for shopping? Do not try to buy everything at one price and at one time, in 99% of cases you will not guess with the bottom and when you buy an asset, it will fall even deeper. This is normal. Use the stepwise method of breaking down orders to buy assets. For example, you can buy bitcoin now at 29,000, if it falls to 25,000, then you can buy another part, and so on. This is a workable option and it is always more effective than trying to wait for a bitcoin, for example, at 10,000 and buy there all at once for all the money.
The same applies to altcoins, and not only altcoins from the top 100, I would not dwell on this particular group, since most of these projects have already made their x's a long time ago, there are promising projects in both the top 200 and top 500 , who have not yet fully realized themselves and are now at the bottom, this can also be a good investment.
This is very good advice, which is why in my case I have no idea what can happen in the market, the truth is that, I have never had so much uncertainty, it is for this reason that I am not in the market right now, because entering to do gambling either, so for those who want to buy it is a great advice, buy in a granada way so as not to have the feeling of losing in the face of any eventuality that occurs.
For those who have a way to buy BTC, it is the best, of course, timing is something that the person who wants to invest in BTC decides, although I think that for those who want to buy, it is the best time because knowing that their ATH will be higher than the last is reason enough to do so.