Founda fairly decent 32" Toshiba on Craigslist? Or maybe FBMarket 6 years or so ago. Heavy af, so it was free. In the past 3 years I found that the Thrift store at my place has started selling them on occasion again, and for really good prices. I don't think I've seen a single one for over $30, and they're all the smaller ones so they aren't crazy heavy. I imagine, this isn't the same everywhere though, I think I'm just lucky and someone at this thriftstore must've finally smarted up and realized there is still a market for these.
I got a 12" Philico Black & White just for fun, and a really really good 13" SOUNDDESIGN tv, from what this YouTube video said, apparently, they just repurposed arcade machine screens for tvs, so they have some incredible picture.
Best advice really is though just scrounging any local listings. Facebook, craigslist, Mercari, check your local classifieds long enough and you will find a good one for free. Just get in the habbit of checking it daily while on the toilet or at work break or something. And if you really want to go the extra mile supplement that with trips to thriftstores, yardsales, moving sales, estate sales ect