Okay.
The ONLY place external drives will appear is in the Files app.
If when you open the files app, you do not see the Samsung T7 Flash drive, with the drive still connected,
For much newer design iPad models, without a Home button, try the new simple hard reset/forced restart procedure for the new 2018-2022 iPad Pros, 2020/21 iPad Air 4 and 5, the 2021 iPad Mini 6 models and the new 2022,,10th gen base models,
1. Press and release the volume button closest to the top Power button
2. Then immediately press and release the volume button farthest from the top Power button.
3. Then, press and hold the top single sleep/wake/power button You will see the Slide to Power off button, but keep on holding down the power button until you see the Apple logo, then let it go.
Once you have performed all the steps, wait for a few seconds and your 2018-2022 iPad will boot up completely to the iPad’s Lock screen.
Check the Files app again to see if the drive appears.
Best of Luck to You!