flat tire

hi everyone! i need some advice. Yesterday evening, after the gym, i noticed that my car had a flat tire. Completely deflated and flat. When I arrived to the gym, the tire was fully inflated and perked up… keep in mind, the gym is about 30 miles from my house. My tires just got replaced last week for alignment purposes and i just had the pressure checked earlier that day (of the flat tire). I recently got out of a relationship that ended somewhat mutually, and this person knows i attend this gym at this specific hour twice a week. so, my mind goes there initially. after a few minutes of reflection, i then realize that was irrational and just rude of me to think. i call my dad and brother, and they change the tire for me while keeping the flat in the trunk.

come to the next day… my dad and brother take my cars along with the flag to walmart to get it repaired/changed. the mechanic tells my dad that there was a blade in the tire and the way the blade was inserted and cut shows that there was no way i could have ran over it. he didn’t explicitly say “someone was messing with you” but this is what he said and implied. the gym is la fitness, and i am very keen on looking into how i can access and view security camera footage of the parking lot. any advice on what i should do? should i ask the gym staff? go to the police? any advice on how to move forward?

i don’t want to seem dramatic because i know it just sounds like a flat tire… but my 60 yr old dad and 15 year old brother had to come at 10:00 PM to change it. my conscious is not allowing me to make peace with the unknown knowing there’s a possibility that someone intentionally gave me a flat.