How Do You Know You’re Making Progress (Without the Scale)?

Morning, everyone, still learning a lot here and trying to stay motivated but sometimes it’s hard when the number on the scale doesn’t really move.

I’ve been lifting for a couple of months, and I feel stronger, but I’m curious what other signs people use to track progress beyond weight?

Like:

• Better sleep?
  
  
• More reps or heavier weights?
  
  
• Less fatigue during workouts?
  

What helped you realise you were actually improving, even if the mirror or scale wasn’t obvious yet?