Career change for better pay

Hi all! I’m actually not a librarian but a library assistant based in the UK. I’ve wanted to go and get my masters to become a librarian but due to living in a very expensive city (and not making a lot as a LA) I can’t imagine being able to afford to do so. I love this field but honestly I would like to make more money one day. Can anyone recommend career changes that are just as fulfilling but hopefully pay better? Ideally I would also deal with less people, I do enjoy the social aspect of the job but I work in a very busy central library and feel like I’m almost constantly talking to costumers, it’s making me a bit socially burnt out.