If my GPA is low and I don’t have extracurriculars and I’ve had chronic absences up until now because of chronic mental illnesses do i still have a shot at getting into college? like should i even bother applying?
It depends. Can you show an upward trend now? That is, over the course of the rest of this year and next, are you in a place mentally to improve your standing?
If your answer is "no," I would strongly caution you against applying. Could you still get in somewhere? Possibly. But is it a good idea to add the stress of college admissions and then college itself to your psychological load when you're struggling? That's something you have to answer for yourself, but personally I would caution against it.
One thing I will say is that if your home situation is a big contributor to your mental health struggles, it may be worth applying to less selective colleges this cycle and then attempting to transfer in a year or two. You should absolutely feel free to apply anywhere you'd want to attend, regardless of selectivity, but if finances are at all a concern this may be the smartest option.
Another option, if you're on the upswing mentally but feel a bit crunched for time in building your applicant profile, is to enroll at a local community college and potentially transfer to a four-year institution later on. I knew a couple of people who did this at Stanford, and they overwhelmingly agreed that it was the right call.
Fundamentally, admissions committees are looking for candidates with strong potential. If your grades were consistently poor throughout your schooling (or got worse over time rather than better), this is a red flag. If you can show that you went through something difficult and came out stronger, it will work in your favour, especially if you have recommenders who can speak to your perseverance. But no matter what, don't apply for college if you're not in a place mentally to make the most of it.