Terms for subject Cliche / convention containing should have

English	Russian
should have	жалею, что не сделал что-л. раньше (+ verb in present perfect: No regrets. Moved in 2021. I wish I did it sooner. Should have moved when I first started thinking about it in the early 2000s. Ce la vie. Better weather year-round, more options for everything, improved quality of life. (Reddit) ART Vancouver)
should have known better	надо было сначала подумать головой, что из этого получится (The school was locked down by police. During their search, police located the staff member who they said had brought a vintage rifle into the school for a presentation. -- "Even if it’s old, you still can’t walk around with a gun. Dude should have known better." (Twitter) ART Vancouver)