I can’t update ipad

Sorry, but no. Both the iPad 2 and 3 are stuck on 9.3.5 (9.3.6 for cellular). These iPads are very old, they are from 2011 and 2012. Better off buying a new device.

Even the 4th gen iPad from 2012 is stuck on iOS 10 and the first gen iPad Air from 2013 is stuck on iOS 12.

Please get a new device if you want to use those apps.

Return that iPad and get your money back and get another iPad that supports either iOS 12 or iPadOS.

iPad 2, 3, 4 and 1st gen iPad mini models are 7 and 8 year old devices, now that can no longer be upgraded.

All these iPad models are too old, now.

Look at

iPad Air 1 or 2 models.

iPad Mini 2, 3 or 4 models.

iPad 5th, 6th or 7th gen models.

if it's the ipad 2 then 9.3.5 is the newest version it support https://en.wikipedia.org/wiki/IPad_2