Nvidia rtx 30 series graphics cards supported yet

>only just got premiere pro last week

Some Tutorials to help you get started
https://helpx.adobe.com/premiere-pro/get-started.html
https://community.adobe.com/t5/premiere-pro/premiere-pro-tutorial/td-p/10974406?page=1
https://community.adobe.com/t5/video-lounge/tips-amp-tricks-to-become-a-premiere-pro-power-user-with-abba-shapiro/td-p/10900149?page=1
https://community.adobe.com/t5/video-lounge/video-series-real-premiere-pro-secrets-by-cut-to-the-point/td-p/10900176?page=1
https://community.adobe.com/t5/video-lounge/podcast-art-of-the-cut-coup-53-editor-walter-murch-ace/td-p/10887889?page=1
https://helpx.adobe.com/premiere-pro/how-to/premiere-pro-nesting-sequence-cc.html

nvidia doesn't think they are a myth https://www.nvidia.com/en-us/geforce/graphics-cards/30-series/

although out of stock right now https://www.newegg.com/asus-geforce-rtx-3070-dual-rtx3070-8g/p/N82E16814126460

Are you using the STUDIO driver?

-such as https://www.nvidia.com/en-us/drivers/results/170344/

rtx 30 series are a myth