I think I accidentally pressed something or activated/unactivated some mod, now my camera will snap back to the center (directly behind character's body) whenever I try to move it. This also causes my player to strafe instead of moving left/right, because the character now always moves "forward" with my mouse the only method of controlling the direction (before I used left/right keys to control direction). Does anyone know how to reset the camera mode back to normal? I don't think it was a console command as I didn't use any, must be some shortcut I accidentally pressed. I'm 100% sure the camera wasn't like this before as I've played the game for over a year now.
I already tried sitting, sleeping, and riding horse, none of these worked.

Anyone know how to change the camera?

Try disabling all mods? Does it happen on a new save?

I disabled every single mod except unofficial oblivion patch, also deleted oblivion.ini (the settings) to force it to create a new one, and even completely reinstalled OBSE, used BOSS, and it's still like that awkward camera. That leaves me to assume that it's a mod that actually changed the camera for the better, and the game's default camera is the awkward center-snap one. The problem is, I disabled the new mods I installed over the last two days (the camera problem started occuring two days ago) and the camera is still stuck like that, so now I don't know what to do anymre. One of the new mods must have made some permanent changes to oblivion.ini or OBSE or something, though I cannot see why as they're all outfit mods... Does anyone know of any settings in OBSE or oblivion.ini that has to do with camera modes?

Was one of your mods a 3rd-person camera mod? When I was testing out 3rd-person camera mods a few months ago the effects of one of the mods lingered after I had uninstalled it. I forget which one it was now.