Been using in hobby projects for a bit now, absolutely fantastic framework, especially the data handling. It also gives you a few goodies by default that Next.js doesn't.
Take a look at https://blitzjs.com! It's built on top of Next.js, which everyone else has been recommending to you, but goes a step further that I think you might find enjoyable, reading your comment.
I think more people should take a look at https://blitzjs.com. It makes your lock in problem slightly worse I suppose but only because it argues that you want most apps to be coupled like this in real life. In exchange, it gives you great developer experience around things like data fetching.