I've tried to fix a deep fryer I got for free, the switch was broken but it was a pretty generic flip switch with a light in it, the local electronics shop had a replacement for like €2 or so. That didn't fix it though, I suspect there's a temperature safety somewhere inside that isn't working right anymore. So far I've had it filled, warmed up, tried out, turned off, cleaned, opened up, etc four or five times already without having fixed it.
It'll be €40 to buy a new one. It's probably fixable, or I could probably replace only the heating unit, but just the heating unit (that is compatible with this one) is likely impossible to get and no cheaper than a new one.
But that's just one example. I for one am interested in seeing products that cost more but that are of provable higher quality and repairability.
There's some youtube channels that disassemble electric tools and point out at all the small or big things that make it good or bad / cheap, things like the kind of plastic used, bushings vs bearings, open vs closed bearings, etc.
In my personal experience, these things have a much great impact on my well-being and quality of life and they are within my control. In contrast with ideal of how I think society/world should be.
If you become accountable to the things that are within your control (ie. thoughts and actions) you will quickly notice that trying to control things beyond that is futile and a source of frustration.
I am definitely guilty of failing on your second to last bullet, and I should work on that.