Can I know why ban appeal has been denied (reason why)  and what should I do to play again as I have not even used any cheated on the game

https://ibb.co/K6T5Lck

As stated by our ban policy (which you can read here) :

Linked Accounts:

• Accounts having overlapping IP and timestamp information will be considered a linked account. Player information streamed to the Service can be used for this purpose.

• If an account is currently banned by BF4DB, all other accounts that are positively identified as a linked account will receive a ban for “Linked Account” as well. Similarly, if the main ban successfully appeals, all other alt bans will be lifted.

• Accounts having the same Gravatar will be considered linked, and treated appropriately.

To clarify : BF4DB doesn't only ban the account but also the cheater and every account he has/had access to.

Then how can I play again

Even if I buys a new game just as I did 1 year back and then if that also gets banned that means If I buy any game it's just a waste of money isn't it

How can I remove that ban I am playing with out cheating at all.