I agree that crypto trading can sometimes be a real lottery, especially when it comes to altcoins - and it is enough to look at the post from Bitcoin_Arena where it is clear how all the top altcoins have failed compared to BTC since the last ATH. It is evident that the times when alts followed BTC are a thing of the past, and that in the long run it makes no sense to invest in them.
Buy 5 coins for 1000EUR each => wait till each of them grows 10% => sell.
Or invest 5000 EUR in BTC at the right time - and it's no secret that this year it was in the time before the halving or even after that, and take almost 10000 EUR of profit (which is great even when you pay income tax - if there is a law that says you have to of course).