On every post dedicated to this topic, I feel obligated to mention these 3 links:

https://htmx.org/

https://unpoly.com/

https://hotwired.dev/

These are the tools that promote the idea of keeping app state on server and client/server talking HTML, not JSON. If you're not yet familiar with the concept, you'll love reading Essays here: https://htmx.org/talk/ (scroll down and look to the right side).