Fly.io is one I've looked at a few times but hasn't been exactly what I wanted to normally I just use AWS, Firebase, or a DO droplet. Supabase is something I've been interested in as well but I haven't played with it yet either.

I've been experimenting with Render (render.com) and like it so far.

Railway is super easy to get started. Render and Fly are good options too

render.com & fly.io are two choices that may fit your description. I've deployed a small project to render.com and it's been enjoyable.

Adaptable.io is definitely trying to make a better developer experience for startups and other devs. I think it's easier than Heroku.

we're currently using early heroku dx as a gold standard while building a python cloud suite at abstracloud.com

(disclaimer: i work at abstra)

If you are doing Django or Python https://appliku.com

Free tier for deployments + AWS Free tier = year or free and convenient hosting

porter is another