I would recommend Oxford Living Grammar or Mygrammarlab. I think they are great in content and not too boring for a textbook.

https://elt.oup.com/student/livinggrammar/?cc=gt&selLanguage=en

https://www.pearsonelt.com/tools/digital/my-grammar-lab.html

Good luck! Let me know if you have any other questions. 

I think one of the most important reference books, with exercises, is the Azar Understanding and Using English Grammar, and the basic and intermediate versions as well.   http://www.azargrammar.com/materials/uueg/UUEG_TchrCreated.html

Practical English Usage by Michael Swan

Teaching English Grammar by Jim Scrivener

Note that these are reference books, not textbooks.