Why did the site plummet 60 positions down in Google?

Question

Search Engine Optimization

Hello, could the site have dropped sharply in the search by 60 positions?
Was 8 became 68?
For several weeks, there were about 150 errors in the validator that were not seen, the alt and title tags of the main page had the wrong encoding, respectively, it was impossible to read them, now the errors have been fixed, the validator shows 0. Could this have affected?

Answer 1

Anything could have an effect. But 60 positions is unlikely.
Most likely, your content is not of high quality, not original or outdated.

Answer 2

Of course, if the titles were eventually indexed incorrectly

Answer 3

Good afternoon!
Anything can be here. Perhaps the titles played an important role, because. in ranking they are very important. Possibly a filter.
Start from the opposite. Fixed titles - re-index pages and see the dynamics. She will definitely get better. Conduct a technical analysis of the site, correct all errors. Pay close attention to the loading speed and mobile version of the site.