You should cancel subscription 2TB 6 months before Google sends an email about your Google One subscription being canceled. So generally, you must cancel your subscription immediately after signing up for a free trial, and your subscription will stay 2TB for 6 months.
Note: Never use your preferred Gmail account to do this method and upload huge files. Your email won’t be received or sent if it is out of storage until you pay for subscription after free trial end.
Dang. That’s why i got my cancellation after a few days. i used my main Gmail account. I hope nothing band happen to my mail. Luckily i’m not upload anything yet. Thanks for your explanation, buddy.