Or you can use a trading bot to automate the buying and selling of alts at a specific time. It works if you know what you're doing. The good thing about altcoins is that they're much more volatile than Bitcoin. This means there's greater room for profit during the ups and downs.
Low-capped coins, and "memes" are the best ones to build short-term profits. For something serious, Bitcoin would be your only answer. Remember, the higher the reward, the greater the risk of loss will be. Just keep that in mind to help avoid getting bankrupt in the long run ("rekt").

I agree that the high-risk ones also have big profits, but we know that there is not much knowledge, either me or other beginner friends, about the working patterns of using trading bots, even though some exchanges have a menu, I say this because I have never used it personally and do not know how it works. which one we should choose and the easiest for us to implement later.