Rather than the stack as in programming languages, libraries, frameworks, to build applications you should probably focus on platforms - be it something like ve

Rather than the stack as in programming languages, libraries, frameworks, to build applications you should probably focus on platforms - be it something like vercel or render or heroku, or a bit more low-level like aws lambda, pick some platform+stack that works well together and that relieves you from thinking about ops and deployment at all. It will prevent you from wasting time at running your app rather than coding features.