I do know how to get up. I just crawl my azz to the living room and kind of flop up on the couch. Then I can get to sitting and then to standing.
A few years ago, we were helping our youngest son get his newly purchased house ready for new flooring. I was tasked to get down on the floor and take off the baseboards. I discovered really quick, because there was absolutely no furniture in the place, that I needed the small folding step stool that I carried in our vehicle. With that, I could get my hands on the step stool and then get my bad knees to get me on up on my feet.