I'm trying to hold on

It's my senior year and it's probably been the worst year I was introduced to anxiety and panic attacks for the first time this year they have been the worse I lost a friendship to someone I thought was a sister my whole high school experience has been horrible I was threatened to be killed life is great I need a new start I used to love life back in New York but i moved to Arizona and things got bad I lost myself . I'm trying to find her again should I go back to the last place I remember being genuinely happy or should I just pack my shit and have a completely new start in a new place if never been before or should I stay in Arizona and suck it up and if you recommend new start give me some good affordable place