Marvel Rivals devs lift bans on players mistakenly banned for cheating: "We do not and will not ban players who are playing fairly"
Wrapping things up, players are encouraged to report any actual cheating they encounter, and contact customer support if they think they've been banned by mistake. Hopefully the chance of that happening is relatively slim, but it's clearly possible – at least NetEase appears to be on the case when it comes to sorting it out.