https://f1calendar.com/ You can download and import the F1 calender from this site. I’m using it on Google Calender and it works well. It should work on other calender apps as well. Use the desktop website of Google calender to import and modify the notifications and all. It also supports MotoGP, Indycar, F2,F3, Extreme E, Formula E.
This is the best for me.
I have 2. 1 calendar for race/quali and 1 with practice.