Mine turned out fine. I’m not sure about the innoculation, though - this was way back when you used a little bit of store-bought yogurt to start it off. Now you can buy really good yogurt starters that will infuse the yogurt with many more of the beneficial little ‘guys’.
Here’s what looks like a pretty exhaustive ‘thing’ about making yogurt at home; it’s a commercial site, but has good information; you can search around for more:
https://www.culturesforhealth.com/learn/yogurt/choosing-a-yogurt-starter-culture/
Thanks, I quit on yogurt about 20 years ago and switched to kefir. Between my husband and I we go through a gallon a week easy.