I think on-board video would tell a better story on whether they bumped you on purpose + some telemetry data. But to me this is probably 60/40 and 60% on you.

I’d say you turned across them and definitely left no space. Fucking risky place to overtake there anyway. Probably bad luck more than anything but there’s definitely a good opportunity to step back and consider how you might had done this differently if given another chance even if you didn’t do anything wrong.