I've been running small SaaS businesses since 2019 with varying degrees of success (currently running a profitable one).
I never really got into JS front-end frameworks. The sheer complexity, and the idea of maintaining essentially 2 apps as a solo dev, never really appealed to me. The furthest I got into JS world was tinkering with Rails' Stimulus framework.
Rails, SQLite, Redis, all hosted on a bare metal server (Hetzner). Deploy with Capistrano (a fancy bash script). Tailwind for styling -- i heavily use their components/templates, which is quite convenient.
I never really got into JS front-end frameworks. The sheer complexity, and the idea of maintaining essentially 2 apps as a solo dev, never really appealed to me. The furthest I got into JS world was tinkering with Rails' Stimulus framework.
https://stimulus.hotwired.dev/