It is true that neither 1 nor 2 have been successfully demonstrated, but there is quite a double standard here: you claim that idealism has the answers to quest

It is true that neither 1 nor 2 have been successfully demonstrated, but there is quite a double standard here: you claim that idealism has the answers to questions about the mind, but you have not shown it explaining anything. Deducing the reality of idealism from the absence of answers to 1 or 2 is exactly like saying, in 1950, that as biology has not identified the biochemical correlates of cell reproduction, life must be fundamental (I know some people hold this view today, but it is at best a niche view that generates little controversy in either philosophy or science.)