I've never succeeded on getting a refund with Google. There were a few apps that tricked me into buying a subscription (namely Musescore and Yazio), I immediately asked Google for a refund because I didn't actually get what I thought I was getting, and they denied me both times.
Now I just don't buy anything on the Play store that I can't afford to just be outright scammed on.
The Musescore app is just a minefield of subscription farming, it was somehow miserable even with an existing subscription the number of times it tried to get me to also get their weird AI learning platform. Now I've left it entirely.
Now I just don't buy anything on the Play store that I can't afford to just be outright scammed on.