So sorry you are having pain when they talk you into having the proceedure they just say you’ll be up and moving around in no time.
I think having foot numbness even after 2 years is normal, but it depends on how numb it is. I had a total knee 11 years ago and it has also burned, kept me up at night and sometimes it feels like I am grabbing an electric fence wire. I feel I was allergic to the Chromium-Nickel, Cobalt. I started having so much inflammation in my body that the cells in my kidneys and bones were granuloma cells. Because of the problems I have had, these so called doctors at Bozeman Health in Bozeman, Montana, are now saying I have sarcoidosis, an inflammatory disease. The place that performed the TKR won't even see me for a herniated disc in L5-Sacrum, which has cause both my legs to go numb and many times I have no strength, makes it hard to drive a car. If you can, get an allergy test for Chromium-Nickel and Cobalt, if those are the metals in your knee. If you are allergic to those metals the knee will have to be replaced with Titanium, which I have read that almost no one has a reaction to that metal. Good luck and I hope you can get the proper care required.

I had my 2nd TKR in August 2021. It was the same ortho who did my right knee maybe 8 years ago. I have preexisiting neuropathy from chemotherapy with taxanes over 12 years ago. This knee was worse when I had it done. My neuropathy increased in both feet and my lower legs. The recovery seems much slower, I think due the the neuropathy. I am now post PT and am supposed to do exercises and walk daily which I do and then stop. I have used every neuropathy drug but the side effects of balance problems are not worth it. I always were those socks with the no slip bottoms and I usually wear socks to bed as it helps the pain and nerve sensations. I had a neurologist from Europe who said they used alpha lipoic acid in Europe, 600mg for 4-6 weeks. I tried it. I stopped after 5 weeks as it did not work for me. Maybe it works for some people. My neurologist now told me the nerve feedback system can cause problems in both legs from the one surgery. I am hoping it gets better or no worse by the anniversary of the surgery. I think walking may help and am going to try and get into a routine again. Anything you can do not to fall, I think, is the most critical. If neuropathy is permanent it is all about adaptation and
learning new skills to deal with how it impacts your life. I now usually drive with only a sock on or my barefooot as ,since this surgery, the bottom of foot sensation has diminished. I have good range of motion in my knee but have not exercised and built up my calf and thigh muscles enough to take some of the weight off of it. I also weigh more than I did with the first knee, but am sure it is not a contributing factor in the neuropathy.