The reason why your Twitter was suspended is that I think it is likely to be considered as a spam account. Posting spam is inevitable once the Twitter account is involved in excessive bounty or airdrops.
You only need to improve your Twitter profile, The probability of being ban will be greatly reduced.
Bind your email address and phone number, and don't always change the access IP, and avoid tweets with tags like "ICO", "Crypto", I'm sure if you do this your twitter account will not have any trouble.