Time to remind her who’s needs take priority. You need quiet to do your work in order for there to be money to own a tv, working telephone and ability to order packages.

Ideally you could gently explain to Mom that you need quiet and being undisturbed to do your work. Unfortunately, Mom is probably not very likely to mend her ways, just as a guess… This is part of why, unless it’s just impractical, as we become adults with our own jobs and careers we get our own place… If this is Mom’s home or she’s the one on the lease there’s ultimately not a lot you can do besides moving out if you cannot get Mom to recognize the problem and try to do something about it. I suspect that this is just part of a larger pattern where Mom’s behavior results in the opposite of what she really wants - In other words she drives the people away who she actually wants to get more attention from… Unfortunately you can only change yourself. If this risks interfering with your ability to do your job, it is a high priority problem and may only be solved by getting your own place. And never, ever let Mom have or “borrow” your keys for any reason whatever - Even if she gave them back she could copy the keys in very little time at any hardware or big box home store… Ultimately part of Mom’s problem may be that she’s just not adjusting to formerly being the center of her home and her kid’s life. Now her kids are older and she’s bored or resents her “loss”. What she does not understand is that her attitude is driving the very people away that she wants close. Nobody but Mom can ever fix that. You have to save yourself sometimes.

How much rent are you paying? Yeah, that's what I thought. Your "rent" is listening to her bullshit. WFH is not for people like you. Get your ass into the office and become one of the relatives she whines about.