I think I'm the most depressed I've ever been in my lifeis it the new job?
No but it didn't help
I was actually hoping work would give me a sense of purpose and help me out but it hasn't so now I'm just floating in the void
Welcome to adulthood under late stage capitalism.
Consider taking up a hobby or something. It might sound frivolous, but doing something productive you enjoy, even if you don't make money from it, even if you need to learn the basics, even if you don't become the best at it, can be good for you. Bonus points if you find a community for whatever it is and involve yourself somehow. Humans are social creatures that want work that feels fulfilling, and unfortunately large swaths of the population can't get that through regular employment. If social media/smart devices have fucked your attention span, consider implementing restraints to such things. Disabling all nonessential notifications is a good start.
Just my two cents.