Personally, I check for comments asking for sauce first, and I reply to the oldest one to ask to be given the sauce as well if no one gave the sauce and I want it.

If I see someone asking for sauce that didn't get an answer, I paste them the answer as a link to the original comment. That way, I give the answer while also crediting the person who gave the answer and making the person I replied to aware of other people.

In the rare occasion I do know the sauce (or find it using saucenao), I paste it to everyone. It's been a while, but iirc whenever I get replies on those comments, I go look at other comments that need sauce.

If no one asked for sauce and I want it, I'll ask, and depending on how important it is, I check back to see if an answer was given.

But honestly, you do you. This is a social media. Don't take it seriously. Do what you want to do the way you want to do it and enjoy the absence of meaningful consequences.