Quisiera saber si puedo cambiar el programa por una versión más vieja

you should be able to have multiple versions of Premiere installed on the same system.  I have Premiere 2019, 2021, and 2020 installed on my mac and I have 2018 thru 2022 on a windows machine.  It's a real plus on Adobe's part...  If you update DaVinci Resolve, it deletes the previous version...    Frankly, I haven't found it necessary to run the earlier versions in quite a while but I also wait a bit before updating until I see how the land lies monitoring this forum...   Just remember, it's not simple opening a project saved from a later version in an earlier version.  There are a few workarounds out there, but they're not simple or fullproof in my experience.  Adobe though does not make it easy to install anything but the latest 2 versions.   You may be able to find earlier versions here

https://prodesigntools.com/adobe-direct-download-links.html

Make sure to follow the download instructions:

https://prodesigntools.com/adobe-cc-2018-direct-download-links.html