Hi Bruno and Sumeet,
I’m sorry to hear you haven’t been getting responses to your proposals. I can assure you that all proposals are delivered to and can be viewed by clients.
Submitting proposals doesn’t always guarantee that you will get hired or interviewed, but you shouldn’t give up on sending proposals to potential clients. When you apply for jobs, make sure your proposal is well written and that you’re absolutely qualified and certain of your ability to complete the job you’re applying for.
I would recommend that you check out these topics to help you create proposals that win jobs, and help you boost your career on Upwork: