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Ta!
It's just consistency really - when I started hitting the gym again in my late 30s my squat was 70-odd kg, I followed the stronglifts routine for a while & it suited me pretty well, I'd been in the gym plenty in my early 20s but never followed any structured plan which in hindsight was a missed opportunity as I was much fitter then & also had plenty of time to hit the gym.
Stick at it - even 0.5-1kg every week or two onto the big lifts adds up eventually, something else I wish I'd been able to tell myself 20 years ago
Being able to squat 1.5x body weigh for 5x5 is impressive to me.