How do I delete apps?

Sounds like you have "Don't Allow" restrictions set for deleting apps.

Check Settings > Screen Time > Content and Privacy Restrictions > iTunes and App Store Purchases > Deleting Apps : change to Allow here.

Note: To make changes, Content and Privacy Restrictions switch must be ON

Why not directly on your Home screen?

Note: Only if you "Allow" in restrictions set for deleting apps.

Just put your finger lightly on an App and wait a couple of seconds. Don't press down. If you get a menu, just keep your finger there a bit longer.

Have you tried a hard reset of your iPad by holding down both the Home and sleep/wake buttons simultaneously until your iPad goes to black and restarts with Apple logo, then release the buttons?

huh?

How are you deleting apps?

What happens when you try?

In Settings are there any restrictions/parental controls set?