Sorry Grandad - but you just do not 'get it' do you- the vast majority of people in this country, just do NOT trust Corbyn, and even more so in such dire circumstances. Totally agree with Riverwalk's words above.
The process needs someone else, more 'neutral' - for it to succeed. JC does not, and will not, command the trust and respect of a large % of the Labour Party- and practically none from outside. It is really essential that you begin to get your head around it I'm afraid.