Here's my approach to spoiler comments - maybe it will work for you:
I often read comments below dramas that I'm interested in. Fortunately my memory is not that good, so when I accidentally read an unmarked spoiler I just ignore that drama for a while, until I forget everything about it 😊I add the drama to my Plan to watch list, write some notes why I'm interested in it and just go and watch something else.
When selecting a drama to watch from my list I'm just looking at the Genre (to check if it suits my current mood) and my notes. I ignore everything else (like drama description, tags and especially comments section).