both analogs are sqeaking and glitched.

I did have a controller that did this as well. The first step is to take apart the controller using the IFIXIT guide. The first thing I would recommend doing is spraying a light amount of compressed air into the analog stick. This is what fixed the controller for me. Next, I would take a cotton swap and clean up all of the old residual lubricant and replace it with electronics safe WD-40. If that works, then great! If not you will probably have to replace the joysticks. You could order a decently cheap pair of analogs from this link PS2 Analog Sticks (or any other ones like this). There is also a guide on how to replace these on IFIXIT.