I think I figured out why my moto android phone kept crashing apps:
I replaced the default bloated Gboard keyboard with a lighter keyboard (so far tried Swiftkey and Keepass2)… and it seemed to speed up my cheap phone a lot and fix the problems with Chrome constantly crashing.
Actually I might also have had some malware or JavaScript crud in my Chrome browser… was getting some odd popups so I totally cleared the data in Chrome and uninstalled some suspect apps.
I get a little suspicious of CCleaner because they have had a security issues in the past.