The one state solution was never tried and never seriously proposed beyond some activist groups.
The two-state solution has been “in progress” since the Oslo Accords in 1993 to establish a Palestinian state on the territories occupied in 1967. The only party that prevented any actual progress is Israel with the continued expansion of illegal settlements and the 1995 assassination of the prime minister who signed the Oslo Accord. Since then successive Likud governments left the Oslo Accord in a zombie status before they officially killed it this month in the Kenesst.
Why are you talking about what you don’t know? It is frustrating to read people suggest the two-state solution as if the past 30 years never happened.