The risk is very high compared to investing in old coins. it takes a long time to decide if a new coin is worth holding as an investment, I prefer to invest in older coins that have seen a journey and survive all market situations. New coins are difficult to distinguish between genuine and counterfeit, meaning that if you put money into it, it is very risky to lose. from that there are many other risks as well as from new and old coins all of that makes no difference
You are right, that is how you should be doing. I am not against putting just a tiny bit into small new stuff if you are willing to lose that much but that is a different approach. Almost all of your money should be in the old ones, bitcoin, ethereum, bnb, litecoin, those are some old and solid coins that you know will do fine.
It is not about some other coin making you more profit, it is about the fact that these would make you profit end of the story, the others are not certain on that. Maybe they will make you profit, maybe they will lose you a lot of money and even all of your money. Luna ranked pretty high for a while too but look at it now. So, even if it is not as high, at least the old ones are guaranteed income.