Single mom by choice just starting

So, I’m just starting out with all of this and I’m looking for the best rout to get pregnant after doing a lot of soul searching (and financial research). I’ve never had fertility issues that I know of, I’ve always been very regular with no signs of reproductive disease outside of painful cramps. So really I just need sperm I think.

But WOW is donor sperm EXPENSIVE! And that’s not including fertility clinics! As a young woman on a budget I’m concerned.

I’ve done a little research on free volunteer donors (Just a baby app, Coparenting sites, Pollen Tree, etc.) But it seems uhhh shady? Also, I’m a lesbian with a very clear boundary in everything (artificial insemination only In All Caps!) But all these men are trying to do “natural insemination” and it makes me very uncomfortable.