Please advise what I can play for free in the browser, what do you play in your free time?
For me, the best casual browser game is definitely https://vuqq.com/spider-solitaire/ (https://vuqq.com/spider-solitaire/) Spider Solitaire. No ads that force you to register, no downloads, just straight gameplay. It's perfect when you need to relax without overthinking. I often play a few rounds in the evening, it helps to calm down and forget about daily stress.