In addition to the extensive history of leaving, it seems to also be an extensive history of leaving as certain roles predominantly, namely Mafia, Jailor and some NK roles. And even if giving you the benefit of the doubt, the history of leaving games prematurely is just way too much. I get it if you...
Your best bet is to e-mail the Devs with the purchase receipt from ToS (You can find your purchase history in Steam under Help > Steam Support), and ask them to change your e-mailaddress as well as inform you of your username.
Contrary to Isadora, I am Dutch. And I can say for a fact (yes, I checked the database) that that name does not exist and is most assuredly not your name. And considering your repeated racism displayed ingame, you are absolutely not getting your appeal granted. I suggest you clean up your act, this ...