I just switched from TT-RSS to FreshRSS. FreshRSS comes out of the box with a Docker image which is really easy to set up. For TT-RSS you have to create your Docker image yourself as neither of the two images available on Github work without putting in a bit of effort.

TT-RSS requires an (old, probably no longer maintained) plugin for the Fever API. FreshRSS has it built in.

Interface wise it doesn't really matter that much.