Broken spokes are often like gray hairs, pluck one a a dozen will show up to it's funeral.
I've rebuilt multiple cheap wheel sets using these $17 Chinese spokes from Amazon. Some of the wheels are now 7 years old and still going strong, never had a problem.
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
I realize I've just alienated 85% of the bikeforum members by first not saying "buy better quality", second by suggesting something Chinese and third by providing an Amazon link, evil old Bezos and all that. But there is no reason to throw away a perfectly serviceable wheel that is doing what you need it to.
BTW pdlamb's suggestion to prestress the spokes is an excellent one.