So I can only invest small and have put some funds in some cheaper coins. Then there are these more expencive ones. Is there a point of owning 1 or 2 of each or is there just no chance to make any significant profit that way? Sorry if this is a really stupid question, I'm a noob.
there are no stupid questions when you are learning.
whether this is good or not depends on your strategy in my opinion. if you want to make profit from altcoins (which seems to be the case here) then this strategy that you are using is not the best one.
what you should do is to invest in a coin (any coin) that is about to have a big rise. invest all your trading funds (invest what you can afford to lose) and then dump it when it is pumped to get your money + its profit out. then move on to another coin that is about to rise and do the same with the money or money+profit that you gained.
this is the way to increase your wealth not by holding on to 1, 2 altcoins.