After you explained it a bit further in another comment it was pretty obvious you didn't mean cryrocurrencies. I really did latch onto "crypto" as cryptocurrency, unfortunately the case for a lot of people.
Godot can run on fairly low end stuff, just use the opengl based renderer. The official Godot docs are actually pretty dang good nowadays.
Join a game jam asap https://godotwildjam.com/ you'll probably find a team willing to take a newbie. You'll learn a lot. Good luck!
Prioritizing developer experience is not the reason we use front-end frameworks. People expect the web to work like a desktop app (no page reloads). The initial request might take a little bit longer, but in the end a well written front-end app will feel faster.
The problem is that people don't worry about bundle size and cram every library off of npm into their website.
Depends if you want a managed service or not. As stated by others, any Linux vm can do it: Aws ec2, Azure, Digital ocean, etc. Cost won't spiral because you pay a fixed fee for the vm you choose (can be like 5 dollars a month).
The options that can spiral if for some reason your app started being used a lot. But likely these will be pretty much free:
A lot of cloud platforms have some sort of managed container service. Wrap your app in a docker container and pay per 10K API calls for example.
Another option is to use a managed service that handles the runtime for you (AWS Lambda, Google cloud app engine, etc.) These options should have the option for a dotnet core runtime. They can also be really cheap if your app isn't used much.
Is this the same Chicago that sold all their parking meters to Wall Street making infrastructure changes really difficult because it would cut into parking meter profits?
Hell yeah