I've been where you are at. I'm an SRE. Last job I had, we were migrating our apps to the cloud. We were ill-prepared and encountered many issues along the way. This migration was over the course of 2 years. In that time I was on call 24/7. Literally, 24 hours a day, 7 days a week, 365 days a year. There were days I would work from 8 am until it was dark outside, and then get called at 3am the following morning because something was down. It was a huge drain not only on me, but on my relationship with my wife. She saw what the job was doing to me, and it caused a lot of stress in our relationship.

I have since quit that job, and have been at my current company for the past year. When I started at this company, in the beginning, I still felt the burnout from my last job. And then I stopped caring, and all of that burnout feeling went away.

At this company I'm at now, I'm still an SRE. We are severely understaffed, working on containerizing our apps and deploying to Kubernetes, and management continually puts unrealistic timelines on our OKRs. There is too much work and not enough people. So I no longer care. I no longer care about longevity at a company. I put in my 40 hours a week, and I clock out and spend time with my family and doing things I enjoy. Life is too short to care so much about a company that would likely not think twice about laying me off/firing me if the situation deemed appropriate.

tldr; try not caring as much and see how liberating it feels.