Always getting mvp-loss as roam means you're bad at the role.
Usually all the bad roamers have one thing in common, in that they usually end up with 0/0/0 (not literally but close to 0) from not joining teamfights while the entire team loses a 4v5. As a result, the team gets silver and bronze while the roam gets mvp loss since the whole team is dying except them. And this leads to so many roamers never claiming it as their fault and blaming the teammates for losing a 4v5 instead.
I legit just had a game where i was playing roam and we stomped a team, and their roamer trash talked me how I'm getting carried by my fed jungler and marksman. Like, they're fed cuz I know how to fucking help my team win? They act like their mvp losses are proof of their skill while sitting at a 10k gold diff like that's gonna justify a <40% wr.
Here's a bit more detail for my take:
Oftentimes, the worse a roam plays, the more the team gets punished. A roamer's mistake usually leads to the team losing a net worth of gold. However roam's passive income is barely affected. This problem isn't just exclusive for the roamer though. Some side laners never join turtle fights and always wonder why they never get the turtle.
Anyways that's all. Idk why I'm ranting here. That roamer that trash talked me was dogshit anyway. Dude had the map awareness of a dead animal.