Indian Government to block ProtonMail after bomb threats were sent using a ProtonMail account
(timesofindia.indiatimes.com)
Well a few ways . Create it on a pixelphone running GOS thru the sandboxed playstore . I also believe it works on any phone running below android 5.
Get a fake number. Plenty of options on Google I use a paid service using Monero. Worth it , cost like 3 euro for a few hours, or a few cents for a one-time SMS.