It is highly unlikely that a wheel bearing is causing a slipping issue.
The only thing I could think would be if the wheel speed sensor was not reading correctly and that was causing a shifting issue but even with this you should have some codes.
So, if you have a wheel bearing issue then we need to address that as that could be a safety issue if that failed.
So as for the transmission issue, that could be a fluid issue, but it sounds more like a possible pressure issue. So, I would suggest checking the fluid and making sure it is the correct level and condition.
I am attaching the info below from the manual on how to change the fluid. Clearly this is recommended if the fluid is not in good condition.
I would suggest we start with this and go from there.
Images (Click to enlarge)
Friday, June 17th, 2022 AT 7:24 PM