@GreeboIsMySpiritAnimal I've posted separately to you because you deserve a post all of your own...
Firstly, thank you for posting and sharing. It is because people CAN feel safe to do that, that makes this whole topic feel as safe and supportive as it does.
I too have had an issue with my scales - mostly because of uneven floors. I changed the batteries but I could still lose or gain half a stone in 3 minutes.... At the moment I have my scales on a wooden floor in the corner of my office, in the same spot. The weight may not be accurate, but it's accurate enough and it's consistent.
I feel for you. Last year I put on 20+ lockdown pounds. I kept joining up with BC threads then stopping filling in the spreadsheet because while others were doing brilliantly (I remember prettybird was on a roll). I was steadily creeping upwards. This time round, it seems to be my time (or my head and body are in the right place) and I'm slowly, slowly inching down.
I have an imaginary alter-ego which is my weight-loss body [just igore if this is all too weird]. I have to coax it in the right direction. Sometimes it just sticks where it is. Says 'this amount' of food input (of whatever type) is what I'm getting so I'd better maintain my homeostasis right here. I suppose that's what people call a weight-loss plateau.
Some people get over a plateau with a kick start e.g. a 3 day egg fast, others have a day when they reload carbs (in maintenance I have a day per week when I might have beans or rice or lentils, but I'm then careful not to also have high fat). For me one advantage of a higher carb day is some big action in the toilet department 
which always feels healthy.
But at the moment, I'm trying to encourage my metabolic ego to feel safe. Safe enough to let go of some weight because it knows it won't starve. So although I'm a frequent 16:8 intermittent faster, a couple of days a week I'll have a great breakfast - eggs, sausage, bacon, mushrooms. Maybe a couple of days later I'll have a 23 hour fast.
I've also been re-thinking my whole concept of 'treats'. I no longer have a sweet tooth so a pudding is a distaste not a reward. It's a genuine treat to know that it's absolutely fine to have scrambled egg and smoked salmon 2 times in a week. And to make the scramble with double cream. But today my 'treat' was a 2.5hour walk in the sunshine. I wore sandals and paddled in the sea.
KOKO Greebo KOCBH (keep on coming back here). I loved hearing about your success in your acting career.
PS I guess that many other actors will be adjusting their profiles considerably more that you have!