All my life I have bought used speed bikes. I finally sprung for a new bike which I use to commute to work (6 miles each way). It's a Giant Contend3 (XL).
I keep getting "pinch flats".
The bike store experts tell me it's because I'm not pumping enough air into my tires. I have a pump. I am now pumping twice a week. (It is baffling to me that skipping pumping for a week would result in a flat, as I have always just pumped my tires once in the spring and left it at that).
I got another flat yesterday, despite my regular pumping.
I'm ready to write off the new bike and go buy another used bike.
Is there something else I should be considering?
In response to the comments below, I weigh 220 lb (100kg) and I target 100 psi (6.9 bar) on the gauge.