Google Business Profile Reviews Are Killing My Painting Gigs - One Bad One Cost Me $2k in Leads

I've been grinding away on my Google Business Profile for the past year, optimizing it for local painting searches, but these reviews are screwing me over. Just got a 1-star from a picky homeowner in the Chicago area who complained about a trim touch-up on a $3500 interior job using Sherwin-Williams Emerald paint - said it wasn't 'perfect' even though I went back twice to fix it. Now my rating's dipped to 4.2 and I'm seeing fewer calls for residential repaints. Watched that Idaho Painter video on handling bad reviews, but damn, it's hard not to respond heated when they post BS. Anyone else dealing with this crap on their GBP? How do you get back to 4.8+ without kissing ass?

man that sucks, had a similar thing with a exterior job review tanking my profile for months til I got a few five-stars to bury it.