Why do restaurants charge more on Ubereats than in person?

It’s not just Ubereats either. Every restaurant I see on any of these food apps always charge like $3 more for every item.

Btw I only use it for pickup and only when I use credit card credits because these apps are not worth it to use otherwise imo.

I’m in Texas for reference. I saw someone say once though that it’s actually not common for restaurants to charge more than their actual prices. If that’s the case, then why is my city the only one that has that as the norm 😭