Relatively lucky of you to have a 5X that lasted that long: mine succumbed long ago to the "boot loop" issue, apparently due to soldering issues endemic among 5X phones.
That's why I'm never buying a Google branded phone.
My recollection is that the problem was an LG manufacturing defect that also affected some of their self-branded phones released around the same time... but yes, I don't know that I'd call Google a "stand behind their product" company in the way some are.
I wouldn't really describe myself as upset with the lifetime of my 5X, but I definitely would have kept it longer. I shifted to the Nokia 6.1 which was fine although with its own quirks and issues, but the price was certainly right. I'm happy now with a Pixel 3a.
Every update ... i wondered if it would fall into the loop... but got lucky.