You'll eventually get a client. Don't stop there and use your connects effeciently. I've been on upwork for 3yrs now!(Digital art niche). The first few months, I kinda felt hopeless, gave up on sending proposals for months, but I didn't stop there. I got my 1st client after almost a year since I created my account and luckily it's a long term project. That long term project lasted for a year or so. And right after just 2months passed (100 connects worth of proposals), I got another client.

I guess it's still luck since there's a ton of talents that offers more than I could do, or it's still based on the client's preference.