does this maybe fit the bill? https://www.amazon.com/dp/B00186URTY/ref=cm_sw_r_apan_i_690GTKAEXBCTJQHGG0C3?_encoding=UTF8&psc=1
If you rent, ask landlord or stupor to change locks asap or ask if you can do it yourself. I also think this or something similar would make you feel safer.
I'm looking for a separate insert, similar to the one I posted. However, the only issue I have with that one is that when you open the door to leave it will fall out. It doesn't stay put. Im looking for something similar that stays put.
It has to be separate from the actual knob and lock. Something that I can use in a hotel room or any door. The idea being a separate lock in case someone picks the regular lock.