How do you lot find long tail keywords?

type the main term into google and stop before the last word - autocomplete fills in what people actually search. then open the people also ask box and click a couple, it keeps expanding. and read forums like this one. the way someone phrases a question in a thread is the long tail, word for word.

The thing that made it click for me was to stop starting in a keyword tool. Two sources beat it on a client site: Search Console filtered to queries where you sit around position 8 to 25 with impressions and almost no clicks, which are long tails the site already half ranks for, and whatever the client's sales and support people get asked all day. Use the tool afterwards, only to check you are not miles off. Worth knowing that plenty of genuine long tails come back as zero volume, so if you filter on volume you will throw away the good ones.