Something that helped me, when I could, but does require a change in lifestyle was getting my dogs. Having them need me to walk them every day forced me out of the house. I can’t walk them anymore and I really miss that.
Try not to overreach and take it step by baby step. Walking to the local shops may not be doable yet but walking to the end of the driveway without panicking might be.
The biggest help I ever got was a nurse telling me (after I’d collapsed in the hospital reception) that it won’t go on for ever. The body’s ability to keep producing the adrenaline caused by the panic attack is finite (about 25 minutes) so it WILL end.