You have bad luck or are doing something wrong. I've had a Pi2 running for years and a Pi4 running since they were released in 2019. I had to replace a SD card once (and now am using a SATA SSD on a USB bridge instead). Otherwise, no hardware failures.

> I can't get it to boot even off of a new sd card.

Best guess: power adapter problems. Either the power adapter itself is dead or it misbehaved, killing the Pi.