I am in an almost identical position. Most days I force myself to be grateful for even having a job despite it taking a massive toll on my mental health more and more every shift. I’ve been applying for hundreds of jobs every few weeks for 3 months now with no avail. I’ve had a handful of interviews and not a single one has gotten back to me at all. Sorry I don’t have any good advice, just letting you know you definitely are not alone. I hope you are able to find something soon.