You have worn your chain past 1% and spent a lot of time in the middle ring. You can see the middle ring is worn high on the teeth and where the teeth have plastically deformed (squashed wider at the roller contact point). Both of these characteristics are visible in two opposing regions of the circumference corresponding with the top of ring when your pedal pressure is highest (horizontal cranks or thereabouts). Nothing much happens to the chainring teeth when your cranks are vertical.
The small ring shows similar wear but to a much reduced extent. You don’t do many miles in the small ring but the chain tension can be higher.
The big ring has low chain tension and wear is always slow.
The middle and big rings get hacked up by gear changing, particularly if you are a bit brutal, but that is different to wear.