Hi Diana
Have you tried to get into a routine and couple exercise to other activities?
Like doing some stretches in the time you wait for the tea/coffee water to heat up or do a couple of lunges everytime you washed your hands or do some squats when you get up from a chair/bed/couch etc.
This is the method of BJ Fogg. "Tiny Habits".
For a lot of us it is much easier to do small amounts every now and then, than a giant work out.
When you have fully established these routines, then you can build on them.
I know it is quite a new environment we find ourselves in in these times.
Humans are able to adapt. That's one of the things we've got going for us.
We just have to do the first step and then everything else will fall into place.
Back when I was able to work out, that was one of the things that helped me.
I did not need to do a lot, just two or three reps. But when I did it, I usually did more than that. I had an immediate feeling of success and that felt so good I just kept going.