Hi, i hope you're doing good today.
Try some of these suggestion that you still have not tried and see if one of them works for you.
https://support.rocketleague.com/hc/en-us/artic...
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.
Regards.