You were found guilty, convicted, and penalised (fined).
Bottom line here is that with that conviction,
prima facie you cannot meet the Canadian equivalent of the "Character Test".
Other than seeking advice from an immigration lawyer in Canada
about the prospects of successfully running an Administrative Law appeal action in Canada*
I don't see where you have anywhere to go with this.
-------------------------------------------
* That is , making an application, having it refused,
and then appealing that refusal.
If there is any discretion available,
and if you even have standing.
Either way, the fees and time involved will be significant.