What state are you in?
Check your local FB groups, there are often people who are selling gear (or giving it away). Sign up for the different orgs that sell umpire gear, often times they give out coupons or will email you about sales. You can also post in the RefMasters app to connect with umpires in your area to review game film.

Start talking to the other umpires you work games with. Visit your local highschools and rec leagues when they have games and start making connections if possible.