Need advice on buying used 2015 brz unlimited with 87k miles

Looking to buy a car now and wanted to seriously consider buying my dream car which is 86 or brz. 86 seems to be very overpriced near my area since I only got $20k budget. Found a 2015 brz limited priced at $15000 with 87k miles at a nearby Mazda dealer store. They just took in the vehicle two weeks ago

I plan to keep driving it until it’s not drivable or got smashed in an accident loll hence I have two concerns and wanted to get some advice if possible. First is that carfax shows accident reported 3 years ago. The used car manager said “Accident damage was mainly in the rear side, and the front bumper was just pulled away slightly, however the bigger issue was the front bumper had peeling paint so I re did it”. Should I be concerned about this? What’s the likelihood that this could turn into a bigger problem

Second, Carfax shows two previous owners. First owner was fine but the last owner didn’t have any Carfax service history for 3.5 years, except for registration renewals (first in WA, then CA, and finally IL). The next recorded service was 4 years after that owner bought the car, by which time the owner had put 45,000 miles on it. (Two months after that service the vehicle was in an accident described by above)

My concern is whether the owner actually did the maintenance but it just wasn’t reported to Carfax. It doesn’t make sense that someone would drive a BRZ for 45,000 miles with no service at all. Or could this imply a bigger problem with how the vehicle was maintained?