[hoppp]

Just switch to linux and it should just work. There are distros that use very little ram and it stays updated. Noscript can help you block javascript on websites

A 15 year old device can be still as capable as a raspberry pi and those work fine now for modern computing

[jkestner]

"the things I was doing for years" unfortunately involves several native apps. There's a reason I got a Mac, after all.