How do you target your sources for comments/DMs?

How do you target your sources for the best results?

I target mainly followers and users that interacted with posts of big accounts, but a lot of the time I found my comments/DMs just land on extremely well made fake profiles which chews up my daily actions quota. (This is different than follow sources, as I know for follow source you can just pick the ones with high follow back ratio)

Just wondering if there are any more advanced targeting methods out there.