You could try installing a port of android x86 (available here) and see if touchscreen works. I have tried installing the port myself and everything works fine (even Arcaea without weird lag issues as android emulators) but I can't confirm if the touchscreen will work since I never owned a touchscreen x86 device.
Finger sleeves are an awesome option but you need to keep buying them because of wear and tear. I had your same problem so I ordered a paper like screen protector. It mimics the texture of paper so your finger glides across the screen with little to no friction at all! It works wonders for me! And you do need to replace them but they last a super long time compared to finger sleeves. Here is the one I got: This is the brand I used and it fits pretty much all iPad sizes
Just amazon. Look for kitchen drawer anti-slip mats. I think i have this one https://www.amazon.com/dp/B01LW5N30I/ref=cm_sw_r_cp_api_i_PHTWPJJRBTSCF6GTT9E7?psc=1. Before i got that i just used two mouse mats stuck together back to back with sticky tac
https://www.amazon.co.uk/dp/B083M6GPQK/ref=cm_sw_r_apan_glt_fabc_1CTQNYAQBHENMFACDM59 Just get something like this the one i use isn't that good but it works because of the tpu case on my ipad sticking to it well
Here's a link! I suggest grabbing some strong double sided tape as well. I use 3M double sided tape and it's SO sturdy. Super nice.
https://www.amazon.com/dp/B08915GS3Q?psc=1&ref=ppx\_yo2\_dt\_b\_product\_details