If your ignition and door lock key has no dimples then you should be able to turn on and/or open both with a slim screwdriver. Someone has removed the pins/springs in your other locks. An e12 ignition lock works in an e9 and is a common swap and that is what you may have, I have one of those in my NK sedan.My ignition key looks same shape but no dimples. Ignition key works fine it opens the doors well. The dimples key only operates the trunk normally.
One last thought, if your key won’t return to vertical I still think it is hitting the striker, try tilting you key downwards when turning which might give it enough room to clear the striker.