Any recommendations for making a free or low-cost wiki for personal projects? (NOT Fandom though)

Hi everyone - wondering what advice you can offer for building something like this. Ideally I’d like to create a simple wiki for creative projects (mostly for content in the DnD campaigns my group has run over the years) and give others editing access, but would prefer something free or low-cost (no more than $10 monthly would be nice). How might one go about doing this? Just bite the bullet and pay for hosting? Maybe use a service like Azure or Linode?

I should add, I would rather avoid Fandom/wikia pages since that platform is an ad-riddled mess and I dislike using it. Most guidance I’ve found online mentions fandom so I’m hoping for different opinions.

I’m moderately tech savvy but have never done self-hosting (though I’d give it a shot if it’s simple enough to build and keep secure). Thanks!