Earlier quoted context omitted.
Although, i have never used them, you can explore railway.app. it is the closest to fly.io and never heard any bad things. I personally at the moment use digitalocean without any issues, but there's always the maintenance overhead of managing a server yourself.
I wish digitalocean offered decent pricing for spaces (s3). Unfortunately it starts at 5$, which is an enormous price for storing 70 small images, but s3 would greatly simplify my server management moving state entirely outside the server (managed database + managed object storage)
Do you have to use an object store in that case? Or does it have to be separate from whatever application instance?