touchscreen for ipad pro 2022

iPadOS does not support external touchscreen devices - but does support trackpad.

Short answer? No.

Sorry.

( What are you trying to accomplish by wanting to do this? )

I wanted to enlarge pictures or texts

You can do ths right on an iPad

Still not getting what ypu need a separate touch screen for.

Why do you need a the use of a separate touch screen device with an iPad when an iPad can already do this.