Hi there,
If you buy a new copy of ETS2 or use a friend's that would count as ban evading and you would be permanently banned again with no chance to lodge an appeal.
Your only chance of playing TruckersMP again is to appeal your bans using the ban appeal system https://truckersmp.com/appeals and if that is denied, you could make a feedback ticket at https://truckersmp.com/feedback. If your appeal is successful, you will be unbanned and able to play TruckersMP again. If not, you will not be able to play TruckersMP again. If you do get unbanned, I would recommend you read the rules thoroughly to prevent yourself from being banned again. https://truckersmp.com/rules
Regards,
Quality_Productions