Clair Obscur: Expedition 33 could be what you’re looking for. The main story areas are significantly easier than all the side content.

You’ll want to do the side quests because how can you not play that game with cool sunglasses and a baguette on your back?

But you can easily get through the game without doing any side quests. And if you are afraid of being overpowered when you do play the side stuff, they recently added some nice controls to bump up the difficulty.