labels are great but usually only work for people where the label thinks they can profit from it. from my experience, the only people they are ever interested in are those with a modicum of name recognition.
but with that logic, its super hard to ever get your initial jump in if no one ever opens the door... so, part of that is to eschew the premise that you need to find someone... they will find you in due time..
the way it works for most labels or orgs is that regardless of how good something can be, it will probably still get passed on (in most cases, speaking from experience and friends experiences) because of someone they know or have some affiliation with... thats where making pals/connections with new people and just getting out there really counts.
some good news though! if you are cool with tape labels putting something out, there are loads of good ones. for my last release, which was in the fall, i had two tape labels simultaneously put out three tapes and then a fourth was digital only, self released. it worked out great, sold out of the limited edition in an hour and got some help in promo from the labels, one in london and one in australia... it worked out great but took a lot of discussions beforehand about ownership and who paid for what and a tremendous amount of time... but was worth it...
bandcamp is a fantastic option and allows you to control your work the way you want to. also, if you have $200.00, you can self fund a run of cassettes. the one thing i dont think works well though is cold calls: instead, use your personal connections, be patient, make cool limited editions where people get more than just the music, and just keep releasing really good stuff... also play shows, that gets people to notice you in a way the internet cant.
all of that being said, look at releases you really like and resonate and get in touch with people. send them some old stuff and new. most labels get inundated with offers so dont posit it as a desire for them to release this new thing you have right now, pivot it as "you made something i really like, so heres something from me to you: hope you like it and thanks. hope we can work together in the future"... one of my pals got on kranky doing just that. its all about dumb luck and strange timing... and obviously good work. just dont let it get you down as it has me many times in the past. good luck out there!