6 android won't consistantly open external links

[Sally-Anne Sadler]

Ph: Nexus 6. Running Android 7.0
Last day or so it won't open links in email FB, Instagram, Twitter, or even chrome approx 90% of time.
Screen goes to one of two error messages reading e.g.:

This site can’t be reached

www.preserveandgather.com’s server DNS address could not be found.
DNS_PROBE_FINISHED_NXDOMAIN

Or that I'm offline.

As an aside, I opened Google maps and it opened in Egypt as default. (as opposed to my home or last location par usual)

Again it's inconsistent. I've tried everything I know. Cleared cache, turned it off and on. Checked updates. Checked memory (17 out of 25.X used) Clucked like a chicken.

Thank you!
SA