Upwork seems like a pretty transactional and unforgiving platform that might be part of your approach, but I'd guess your best results would come from establishing a good presence off-platform.
Here are some thoughts that come to mind:
Establish your expertise by writing about your work.
Have a great landing page that explains exactly what you do well and the kinds of projects you'd like to take on.
Get in touch with recruiters who might be interested in placing you for contract work.
Attend meetups and conferences and connect connect connect.
You don't need all of that, but it's some ideas.
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Upwork seems like a pretty transactional and unforgiving platform that might be part of your approach, but I'd guess your best results would come from establishing a good presence off-platform.
Here are some thoughts that come to mind:
You don't need all of that, but it's some ideas.