Your story just doesn't make sense. How could you "accidentally" put your brother's ETH address in a bounty application?
It would be slightly more plausible if "your brother" didn't already have a bunch of alt accounts.
Forum Username: gmjutt6
Forum Profile Link:
https://bitcointalksearch.org/user/gmjutt6-2725176Telegram Username:
@arif7383Participated Campaigns: Twitter, Medium, Telegram, LinkedIn, reddit, facebook
ETH Wallet Address: 0xf86e7742766909a9CA716e7Ae8De3d83A00a230C
#PROOF OF REGISTRATION
Bitcointalk Username: idris123
Bitcointalk Profile Link:
https://bitcointalksearch.org/user/idris123-1920414Telegram Username:
@arif7383Participated Campaigns: Twitter, Facebook, Telegram
ETH Wallet Address: 0x68733B63b1Db3353247AD52f2bAd2BAd62DB3698
#PROOF OF REGISTRATION
Forum Username: aiyan786
Forum Profile Link:
https://bitcointalksearch.org/user/aiyan786-2749993Telegram Username:
@idris121Participated Campaigns: Twitter, Facebook, Telegram, Article
BEP20 address: 0x2d32b00b2Ea1FBf66cEA881C23285C54537d3Ea3
#Proof of Authentication
Telegram Username: @Saifan789
Bitcointalk Username: heena121
...
And there's probably several more but you get the point.
Finally, there's a lot of rapid transactions between you and "your brother" on other blockchains, including Polygon:
ETH Wallet Address: 0xf86e7742766909a9CA716e7Ae8De3d83A00a230C
ERC Wallet Address: 0x96b74f1fD466E0291b00C96aC752b47c0E5dF696
https://polygonscan.com/address/0xf86e7742766909a9ca716e7ae8de3d83a00a230cAll these txs took place in the span of 17 minutes. Highly unlikely you were coordinating this with somebody else.
So its been over a year since you were banned. Even though you're not supposed to, you could have just made another account and ranked it up somewhat significantly since then. My suspicion is you didn't do this because you already have at least one other account currently active on this forum.