Getting fingered 🙈💦

So I have mind blowing sex with my partner , I especially love foreplay with him because he knows just what to do when I need it especially when he fingers me 🙈however, when I masturbate solo and I’m fingering myself I don’t get anything! I can’t hit any spots or anything!!! Am I not hitting the right place? Are my fingers not long enough? I don’t get it!! Any advise?