Is there anything like this for Linux (i.e. user-friendly blockers for the entire OS, not just the browser) I love the screen time feature on my iPhone to set

Is there anything like this for Linux (i.e. user-friendly blockers for the entire OS, not just the browser) I love the screen time feature on my iPhone to set nonnegotiable time limits for myself. However, I have not found any good solution for Linux I am happy with so far.