How much free space do you have on the drives where the game is saved?
You might try resetting your cache.
I am not aware of any community patches for SWBF2. All patches have come from EA/DICE.
I have it installed on my 12 TB hard drive (external) and I still have 8 TB left so it's not storage related. I've tried resetting my cache before but will reply with an update after I try again
Resetting the cache did nothing at all. On Mission select the level immediately after is playable, but has the same issue. so basically, every mission onward is unplayable which makes the campaign unbeatable. EA, people still play this and this bug is preventing us from playing it. Fix it already!
I suggest you post your platform, as the fix may be different based on what platform you're using.
If you're on PC, attach a DXDIAG report, as someone may spot something.
Windows 11 is what I'm using.
Attached is the report
