Crypto losses

I’m not sure if I’ve got the jist of crypto, maths isn’t my strongest suit. However I have invested in crypto since Covid, I literally have no idea what I’m doing, I usually invest when the market cap is down, I try to track the market (coin marketcap).
Recently I know the market is down massively due to a number of things, but I’m still investing a couple hundred every so often.
Thing is idk if I’m just being stupid, I try to check regularly and I’m basically in losses??

Can someone please give me some advice?