If you have already reported the players in-game, then all you can do now is try and avoid them as best as you can. There is no reason to begin DMing them just because you suspect they're using aimbot because there is the chance that you could be wrong. You can always challenge the player to a duel as you did in the video you provided instead of hunting them down and RDMing them.
Looking at your action logs, you killed Brandon at 00:53:51, then they were killed again by a cop and sent to jail at 00:54:17. At 00:55:40, Brandon left jail and then you killed them a second time at 00:57:23. I did not see Brandon doing anything to you the 2 minutes they had since leaving jail and dying a second time at your hands. Therefore, the infraction for RDM is valid and your ban will not be removed. You can always DM Karbz if you are not stratified with this decision.