Good morning @Mick1 and welcome to the forum 
One element that will be holding you back is the fear of falling, the fear of not being able to get yourself back up if you do fall. Your walking stick helps reduce that risk but it can be as much a mental crutch as it is an aid. Learning how to get down and up again from the floor will help increase your confidence in that arear. Practicing this daily in the comfort of your own home will also strengthen the muscles used for these actions and that’s a win win in my book!
Strong legs strong confidence. And a good one for strengthening your legs is sit-to-stands using a chair or free squats…which you are probably not ready for yet I’m guessing 
Another member here, @Bobbi, is doing just that and he has created his own video of his attempts which we discussed further down in the post below. A lot of hard work goes into this kind of manoeuvre so you get a pretty good full body workout doing it 
Lorraine