It was a struggle. I actually started a get fit before the pandemic, dragging myself along once every two weeks, to not much affect. I then got my COPD diagnosis, hugely delayed due to the pandemic and that kick-started the need to make an effort. Late 50s is kind of last chance saloon. I would recommend keeping a track of achievements, as that has helped a lot, by setting goals, like can I do 10 stone, my own body weight (getting more likely as I lose weight), max the machine? I do a test every six months, to see if I can increase the single maximum rep, which is not always the case.
What also helps is noticing the benefits, like picking up a coffee table when my father wanted his carpets cleaning. It is huge and tiled and in the past, I could never have done that so easily. The Fortnine video has revealed another benefit I would not have otherwise noticed.