Long-time reader, first proper post, and it's about do cougars looking for young.
Separate email and location permissions off, then worry about do cougars looking. Most mainstream apps work fine for mature dating if you set your age range appropriately.
Being upfront about your age preference in your bio filters out mismatches before they happen. The key difference in mature dating is that people tend to be much clearer about what they want.
Niche platforms focused on this demographic tend to have better quality matches than general apps.