CARNAC is the component of MC that interprets file names when they are initially imported, and it can read the format you are using. i.e. "Movie Name (Year)" So it should be identifying the movie correctly if the file name is correct. Once CARNAC has done its thing, then the "Get Movie &TV info" tool will look up data from the appropriate database, TMDB in this case, if the file is correctly identified as a movie during the import process. You can use Tag On Import to ensure files imported into a movie directory are correctly tagged as a movie, before the "Get Movie &TV info" tool does its thing. But for your two examples that doesn't seem to have been necessary, or you have already done that.
As a test of what CARNAC is doing, turn off the "Get Movie &TV info" setting in Auto-Import for movies, then import a new movie with the file structure you are using. Once imported, check the movie tags to see what CARNAC has done. The Name and Year should be set, plus the Media Type and Media Sub Type as a minimum.
One possible reason that the "Get Movie &TV info" tool doesn't find a movie record is that the Year is wrong for the movie. While the manual process appears to go by name mostly, I think the automatic process takes more note of the Year to select from possible matches. For example, TMDB shows two movies called "Tangerine", one from 2008 and one from 2015. If the Year wasn't correct, then the results are ambiguous. Maybe even if the Year was correct, MC may not select from two identical movie names. I'm not sure. "Ted 2" on the other hand is a completely unambiguous movie name, so it gets an easy match.
There have been a few details posts about what CARNAC and the "Get Movie &TV info" tool actually do, when run during Auto-Import. Also the Import and Auto-Import Wiki articles may have some clues.
Regarding the frame grab for movies, I suspect that is just a thumbnail MC is creating for display, until Cover Art is available. I'm not sure if you can just stop that happening for movies, but play around with the setting at "Tools/Options/Tree & View/Thumbnails/Capture video thumbnails at x seconds". Try a setting of zero seconds, or maybe -1 seconds, to stop the thumbnail being created. You could also just uncheck the "Create thumbnails for videos", but that is going to affect all videos.
Have a good search around the forum on the suggestions above. Your issue may already have been solved, or at least discussed in detail.
PS: I'm not sure exactly what you mean when you mention custom templates. Where/How are you doing that, or what do you mean? Maybe there is a disconnect here somewhere.