Yes,losses normally happen when trading, and as long as you also make some profits aside from losses, I think that's really fine and not something to worry about. Just change your mindset that in trading, one sometimes need to endure losses first before he will learn and improve his trading strategies. But if within 3-5 years you still end up with losses, I guess you have to evaluate yourself again, or evaluate your skill and trading strategies if they are still working or not.
Everyone who trades will of course experience losses in the trades they make either because of mistakes they make in analyzing or because they lack knowledge about an asset they choose to trade and for those who are just starting out, of course this is very normal and good for them. they use it as a lesson so that they no longer repeat the mistakes they have made in trading so that they will be able to make profits in trading and if someone continues to experience losses, of course they will not learn from the mistakes they have made and it would be better for them to try other options. in crypto is like making an investment and this has a slightly smaller risk compared to trading.