I pay for a subscription to Scribd, i think its like $12 or $14 USD/month. I started using it after I heard an ad on Levar Burton's short story podcast, "Levar Burton Reads". His recommendation sold me because he's a genuine advocate for literacy. I don't THINK it's Amazon affiliated, I try not to use Amazon products and services, but it's getting harder all the time to avoid them. It has slightly less of a selection than audible, but I find many great things on there. It doesn't have tokens or whatever the audible bullshit is, you can just listen to whatever you want whenever you want. There's no ads, but it does make recommendations and suggestions, I'm sure those are some kind of sponsored. When I signed up, it also automatically signed me up for a free service called farfaria, or something like that, which is a children's audio book service. I had no interest in that, but my mother, who is a nanny, really enjoys it. I really really like it, but there are some titles (can't think of them off the top of my head, but mostly big name and brand new stuff) that aren't on there that I do feel like I miss out on.

A booktuber I like uses libro.fm I can’t speak of them myself as I don’t listen to audiobooks

Yeah I looked too but I really enjoy listening to warhammer audiobooks. Libby is not an option and the libraties here don't have any of those books available. Audible has every single one the moment they release.

I like downpour.com, and I have used audible-tools.kamsker.at to remove the DRM from audible.