Welcome to the forum, teegee:
Oh, Wow! This looks like a serious multipath reflection problem, with signals bouncing around in all directions.
Your signals are very strong, but you will need to do a lot of experimenting with indoor antennas and their location. If you extend your coax with an F81 coupler you can add more coax to allow more choices of location.
If your apartment has a window that faces SW without lowE glass or a metal screen you might be able to put your antenna inside that window with promising results. If not, you have a lot of trial-and-error ahead.
Maybe you are lucky enough to have a balcony.
Your antenna doesn't have an amplifier, which is good because it probably would be overloaded. Your antenna works better for UHF than VHF-high, real channels 7-13 (not virtual channels).
You might have better luck using a small outdoor antenna inside because it will be more directional to reject some of the reflected signals in that congested area.
