It won't happen again because the ban is permanent. Create a new account.

No, account sharing is against the Steam Subscriber Agreement and worse than a ban.

VAC bans are permanent, doesn't matter who used the account.

Create a new account and move on, your limited account is worth nothing anyway.

引用自 Frost：

hello can i please get unbanned from cs2 from a vac ban? my brother was in this account a couple of years ago and he got it banned please unban it and it wont happen again.

create a new account. The 2172 day old vacban is permanent

Also you are responsible for your account doesn't matter who uses it.

Don't cheat, loser.