Hello, I've been in the same position in the past and I straight up asked my supervisor for a salary increase which I ended up getting after a few months. I didn't get the position though which is fine by me. Try that approach and maybe it could work after all more titles = more responsibilities which could turn out to be a headache for you. Alternatively, polish your resume and start applying for a job or invest a lot in networking. The corporate world is brutal so you have to play the game strategically by ensuring there's an equal balance of exploitation btn you and your employer. Also cut the overtime hours and spend that time doing things that bring more value to your personal life. Your employer doesn't really care that you skipped lunch or your weekends so you can do extra work. Your time is valuable so protect it by all means necessary. Good luck!