So you want to protect yourself while browsing online?
You say you're not technical and don't really want to bother with too much complexity.
You want a minimalist, multi-platform solution that doesn't slow down your browsing experience on any computer?
And you've no issues with Google - you generally trust the company?
Here's what you need to do now.
1. Use Google Chrome. Yes, it's still the safest and most secure browser.
2. Delete all of your current extensions. You will want to manage/remove any existing Chrome extension that isn't from Google or that you're not familiar with.
3. Add the Chrome Extension HTTPS Everywhere. This extension will automatically try to secure your web browsing by using SSL encryption where it's available. You don't even have to think about it or know was SSL encryption is to take advantage of it.
4. Add the Chrome Extension Privacy Badger. Provided by the Electronic Frontier Foundation, Privacy Badger attempts to negate third party tracking techniques that spoil your privacy.
5. Add the Chrome Extension Adblock Plus. This tool is used to block ads from appearing in your browser and potentially harming you.
6. Add the Chrome Extension DOT-VPN. A virtual private network tunnels your traffic through another server and encrypts your communication. This tool automatically handles the heavy-lifting making the use of a VPN relatively easy. DOT-VPN is free; ExpressVPN can be used by ExpressVPN customers but is also a great extension.
Naturally, there's a lot more you can do but these are reasonable, easy steps to help safeguard your Internet browsing activity.