I don’t suppose you have access to a sewing machine? Skirts are one of the easiest things in the world to sew, and while fabric from a craft store might not be cheap, there are options for thrifted or secondhand fabrics that are more budget friendly.
I’m transmasc so I don’t have great advice on fit, but here’s a short on skirt placement that sounds like pretty solid advice to me. If you fit the skirt around your “new waist” like they suggest (right under your ribs), you might not need the belt, and you’ll be able to hide any weird sewing on the waist line with your top. Then the only thing you really need to sew properly is the hem, which is dead simple on a machine.
According to knowyourmeme, this is a photo from a 2018 session of Japanese Parliament. The guy in the center is calling for a vote on a controversial bill, and a bunch of opposition party members are attempting to physically prevent him from doing so. Apparently this is a thing they do in the Japanese Parliament sometimes?