I've forced myself to approach and talk to women that I wasn't really that attracted to in the past for reasons similar to this and it never worked out lol.
There were a few times I'd internally be saying to myself like "go approach those women sitting at the bar there as practice for tonight". I'd go approach them and I'd actually get attitude or the whole interaction would just be super awkward.
Spring of 2019 I signed up for a speed dating event, more so for the experience and to practice with some slight hope of there being something I was interested in. I wasn't attracted to ANY of the women, some were even unattractive, and out of the 12 women that were there I only had 2 interactions that were actually enjoyable. I got 0 out of the experience and it actually made me feel worse than before.
However, I've also approached women I've been into and generally had much better results, at least in that moment. I think most people are aware of where they actually stand in the dating market and gravitate towards those that are around their league. Sure, you have some people that have no clue where they or where others stand.
For instance, I had a woman I know point out a very overweight woman and ask if I'd date her. My response was "why would a guy that's 6'4" and in really good shape date a woman like that?" and she didn't understand that.
Go for what you are attracted to, I can't imagine going out on a date with a woman who isn't even arousing to me.