While we won't be able to advice agencies and clients with how they select freelancers, you can definitely create a proposal and a profile that would make you stand out from everyone else. You may want to check out these articles from our Hiring Headquarters to help you create proposals that win jobs, and help you boost your career on Upwork:
Let me know if you need anything else.
Peace be upon you.
Your profile is locked, so I don't know what services you offer. Also, I don't know what bidding problems you're encountering. Frequent problems are low or zero award rates, poor quality clients and launching a response into the ether without any indication it was received.
Generic advice: Make sure your profile makes clear what differentiates you from everyone else. Low price should not be your strength. Respond only to job posts with ten or fewer existing responses; respond only to clients who have a hiring record for now. Know as much as possible about the client before submitting a response, and talk about the client far more than you do about yourself. Talk about what business needs your services meet and focus on business results. ASK QUESTIONS about the client's business. This shows you are interested in the client, not just the client's money. Questions invite responses. Now you're in a dialog, which is where the best jobs are won.