I’m not much of a downvoter, but I don’t think there’s anything wrong with you downvoting a lot.
Downvotes are a key feature of this kind of thing, and lots of people have argued lack of a “I vote to suppress this content” feature in facebook is why it’s such a haven for conspiracy theories and crazy nonsense.
A good feedback and control system needs actuators in both directions. The downvote button is a valuable tool and I am totally happy to hear about you using it a lot.
If you don’t mind my asking, why are you trying to make this change? What do you think might be wrong with it, for you?