my whole family loves nokia cellular phones, they are high quality and made to last.
why is nokia not producing android phones and chose to make windows phone instead (which is a terrible decision and fucked their shit up).
Because they didn't go with the times. They kept ignoring touchscreens until it was far too late, Nokia was on the edge of extinction so Microsoft bought the company for the name.
I believe it's due to contractual obligations, after selling to MS they had to stay out of mobile for a certain number of years. This is also why when they launched an Android tablet last year it was only available in China.
It looks like they could start selling mobile phones again in Q4 of this year so keep an eye out for them.
They made the X family a few years ago, and it wasn't well-received.