HOW DO I ENLARGE THE FONTS??
Go to Settings > Websites > Display > Customise Fonts and try to increase 'minimum font size'.
I had to remove Google because their recent updates removed the plug-ins I needed for Facebook games and various videos and other plug-ins needed on the www.
Both Chrome and Opera are based on Chromium, that removed support for npapi plug-ins a while ago. So, if those plug-ins don't work on Chrome, they will not work in Opera or any other Chromium based browsers.
Do I also need to install Opera on my tablet?
Nope but you can do it if you want.