Headphones that can 100% block music played in public?

I have a very annoying and distressing problem where if/when I hear music or tv I saw growing up, I have cry-yelling meltdowns.

It happens super often, like grocery stores, in stores, etc, but I try to control my environment at home (pay for streaming with no ads bc commercials now are playing 90s music clips). My adult day center supports me and plays alternate music or gives me a heads up if it’s going to happen so I can move rooms.

Unfortunately, my therapist whom I’ve been seeing for 3+ years and is amazing, he moved clinics and the current clinic plays a mix of regular and old music, LOUDLY. My therapist has tried to get them to change it (playing current mix, spa music, classical music, instrumental, or anything from the last 25 years). The person controlling it is the business person and is super defensive about it, and I’ve been there twice, with the last time cry-yelling.

I’m so sorry, I always over explain. Point is my AirPod pros 2 will block the music in the lobby, but only if I blast my own music while wearing them, which also wears on my nerves, esp if I’ve had to do it a lot that day.

All that to ask, I just need headphones (not earbuds) that will 100% cancel out music I would hear in the clinic. I can’t hear it even a bit, bc my brain grabs it and plays it over and over with my feelings of being scared in the past.

The cost doesn’t matter, if something exists under $300 that’d be absolutely ideal. If it’s more, I’ll take a loan or something, idk.

Please help me with ideas!! With headphones, not earbuds please!!!