There are some projects form a few years ago. Mostly using Parsec but there might be more, even open source, options in that area.
But all the DIY solutions will require you to have some knowledge in regards to public clouds. But all-in-all they shouldn’t be that expensive as they generally make use of cheap instances and automatic shutdowns. So you only pay for the time you are actually playing plus the storage.
One quick search showed github.com/badjware/aws-cloud-gaming but I can’t say anything about the working state of that repository. But it should be a good starting point.