I was mistakenly thought by the official that I was maliciously forming a team and was banned for 30

Solution
Accounts are suspended for violating PUBG MOBILE's terms of service. You can use the File Claim option if you wish to appeal for your account suspension.
If you have any objections to claim results, please contact the customer service through in-game or by sending an e-mail to service@pubgmobile.com.
If you have any objections to claim results, please contact the customer service through in-game or by sending an e-mail to service@pubgmobile.com.