From New Scientist a few months ago:

Philosophers as far back as Pliny the Elder have speculated that the moon’s movements across the sky might also be responsible for earthquakes and volcanic eruptions. Statisticians fought over the significance of the connection in the 19th century, and geophysicists of the 1970s and 80s kept the claim alive until lack of evidence finally pushed it out of the mainstream.

In the immediate build-up to a phreatic eruption, hundreds of thousands of tonnes of steam get trapped in chambers below the volcano itself. And just as lakes are capable of displaying full-blown tides while your bathtub is not, this vast body of gas becomes uniquely sensitive to the moon’s pull.

https://www.sott.net/article/384749-How-the-moon-affects-volcanoes

This made news because they have had a go at explaining why.

Many years ago I emailed 25 scientists with statistical evidence linking lunar eclipses to the biggest earthquakes. I gave them the spreadsheet, the numbers were definitely correct. Three replied, and they basically said no scientist will touch it unless they can explain it.

And it had no predictive use either, I don’t have the skills to look at locations of quakes relative to the gravitational pulls of the sun and moon. So it is just a curiosity.