Raw Files

Probably most frequent faq:

https://community.adobe.com/t5/photoshop-elements/faq-will-photoshop-elements-work-with-my-camera-or-why-won-t-my-raw-files-open/td-p/4303022?page=

The links tell you that, as expected, an old software can't edit raw files of any newer camera.

The first link tells you need ACR 11.4,

The second tells you would need to buy the latest PSE2020.

The free solution is explained:

Download the free DNGconverter (not a plugin), but a standalone software.

It can batch convert a whole folder of proprietary raw files to the universal DNG raw format that old cameras can read and edit. An additional step, but free and the same quality.