Whenever a recruiter contacts me and I say I'm looking for a part-time job, they ghost me. They don't even say "that's not what we're after", just... nothing.
I hate to say it because it many companies will be extremely frustrated if you do this, but if you just want to maximize self-interest the move is definitely to go through the whole interview process without mentioning that you want part time, then bring it up at the offer stage. Some will be annoyed, but you’ll avoid getting filtered out before meeting an actual decision maker who can make an exception for you if they like you.
Not even dating apps have been this rude to me.