For me if I had to pick a good contender it would be the UK version of The Office.
I know many tend to debate how Ricky Gervais really fell off and how he repugnantly acts like a whiny centrist edgelord but me personally IMO I actually don’t think he was ever funny not even a little.
His big break through television was just so painful to sit through it’s so charismatically boring the characters are completely generic at best (notably Tim) or straight up insufferably unlikable at worst (especially the protagonist David FUCKING Brent) and most importantly the humour is just embarrassing.
Always seemed like The Thick Of It but without the nuisance tongue in cheek and charming satire.
I think it takes a different approach mentally to enjoy it. Especially compared to anything modern. I’m working through it slowly myself and just finished season 3. I watch it with friends tho which maybe makes it easier to watch.
All that said, if it’s not clicking after 10 hours, could be best to put it down. You can always try again later.