It is not about ban evasion that is detected by YOSHIE but you can read
[TIPS] to avoid plagiarism and check back your post history to figure out your probability to have a second chance. I guess you won't get a second chance (not yet mention your ban evasion).
If your plagiarism was made after then rule on plagiarsim was applied, your chance will not exist.
In some ban appeals, I see users can get their second chances if their plagiarism was made years ago or even before the rule on plagiarism is here and how many times you plagiarised.
Globals can now issue sig bans so it'll happen more often but isn't going to be a let off for everyone (so if half your posts are copy and pastes then forget about it but people who are getting banned for one or two posts from years ago will likely be shown some mercy).
Just help you know but your ban appeal can be closed already.