I recommend this video to look more into OSR philosophy regarding the rules: https://www.youtube.com/live/bCxZ3TivVUM?si=aZ-y2U_AVjn9a6Ua
I recommend this video to look more into OSR philosophy regarding the rules: https://www.youtube.com/live/bCxZ3TivVUM?si=aZ-y2U_AVjn9a6Ua
And some systems make that job easier for the GM than other systems. Winning all the time without challenge is boring. Getting TPKd every other session does not feel good. A good GM should hit somewhere in-between. So you either have a system that helps you do that or you really need to have a lot of experience.