Overseas jobs hunting

I am a recent engineering master graduate working as a control engineer looking for overseas positions in Europe or Americas. I am targeting mostly aerospace and mechanical engineering jobs but I'm also interested in data analysis roles. However, the companies I have applied to outright rejected me, which I suspect is due to visa sponsorship issues.

Is there anyway I can overcome the visa sponsorship barrier? Any general tips for finding overseas jobs?

Edit: I should specify I am from Hong Kong with HKSAR passport not BNO

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