settings-networks-wifi-top right ish should be 3 dots or whatever your phone uses for a drop down menu..saved wifi...there you can select whichever ones you want and forget them.

if youre talking about the list that pops up and shows a bunch of connections prior to going into any wifi options then those are current available connections and not saved connections.

Thanks. We see other networks but can’t find a way to delete them. We had a Starlink but it won’t go away. Now we only use T-Mobile. 

the first list is what is showing up to your phone...not saved..just whats currently available..you cant get rid of those...the actual saved ones are listed in the saved list..THOSE you can get rid of.

Weird that the Starlink network won't go away. This might be a silly question, but do you still have that Starlink modem/router plugged in?