There are repair shops around that repair old CRTs: https://www.k-and-s.com/electronics/crt-repair

And apparently they are still making CRTs in China. I saw it about a year ago and you have to buy like 100 of them at a time. Never confirmed it myself so take it with a grain of salt.

Theres also converters that will add scan lines in, making hdmi look like old crt television.

So lots of options. But I think it will eventually die and thats ok.