You should ask your doctor about akathisia (aka “inability to sit”). Here is the Wikipedia page: https://en.wikipedia.org/wiki/Akathisia
As you can see, it’s a side effect from the kind of medication you are taking (if you Google “akhatisia escitalopram”, you’ll get more specific stuff). I know somebody who had this, and heard of others, and it’s brutal (give me ADHD any day!). It’s literally impossible to sit still or focus on one thing, and it can trigger extreme anxiety. ADHD medication wouldn’t help for that. You will need to change your medication and/or add something that might calm this down (most likely a benzo like Diazepam).