Deep regret from a rash decision

I messed up. I’ve been living under a rock with a Model 3 LR from 2021 and decided to trade it in for a Model Y. I completely missed the memo on the stunning lack of features and differences between the base and premium trim, and only realized what was up after driving off the lot. I looked for FM radio, couldn’t find it (and chalked it up to my not seeing it), played a song from my phone, and realized the sound quality was terrible.

I tried to return to the center to reverse my mistake but it was too late and they said the best they could do was a trade in.

Help me live with my decision please.