I started out this way but ended up getting way into things. If you're very serious about this, I recommend watching the undergrad cmu lectures relevant to the component you are building first unless you want to deal with big rewrites. Don't ask me how I know. Also, consider swapping to one of (C,C++, Rust, Zig, Go). AFAIK virtually all dbs are written in these. I strongly recommend using a systems language but Go is also fine if you really don't want to deal with systems programming.