What You can do, is to concentrate to Smart Matches and Record Matches. With this two options You can find possibly other researchers with identical branches in their trees.
But, as I've written before, always crosscheck, what You find as good as possible.
Another option, if You are looking for specific persons infos, is to use the Community (https://www.myheritage.com/community). There You can place different questions about persons, photos identifications, translations, transcriptions, etc.
An absolutely 'lucky punch' could be, if You find in the web (otside of MyHeritage) a private website with questionable persons, and maybe a contact to a enthusiastic family researcher.