UPDATE 2.0
The newer file "E Key Rebind + V to Walk" does the same thing but also adds the ability to walk by holding "V".
After hearing the other walk mod was incompatible with this mod, I decided to make my own version. So you can have both E to Interact and Walking. All in 1 convenient file.

For some reason, CDPR sets the key binding bind for F rather than E, the standard key binding across the industry. And you can't rebel in the key game binds for some reason.
So I decided to make my own mod, which changes it and makes it more consistent with other games. You can now use E to interact with NPCs, loot the pick-up and enter your car.

IMPORTANT
If you want to install the walking file. Before you install, call your car again. I suggest restarting to "B" because it's an unused key.

Installation
Simply paste the inputUserMappings.xml file into - Cyberpunk 2077/r6/config

Auto Walk
I can't figure out how to toggle walk, but you can make yourself walk automatically. To do this, start walking and then start walking in photo mode (by default "N") and then exit from photo mode. And there you go, you're gonna be walking auto. Click "V" again to stop walking.

Note:
I recommend that your vanilla input UserMappings be backed up in inputUserMappings.xml file. Only if you ever want to return to default.

Credits:
Ausanan1