I think he is too proud to do something like this. He wants to face the charges and win.
You are correct - he is too proud to do something like this.
If he did though - it would really demonstrate to the world the USA is no different from a South American banana republic, where opposition politicians must flee regime persecution.
The only chance Trump has to win against the current charges is on appeal, the two current criminal indictments are in NYC and Washington DC, ask yourself what chance does Trump have in either place for a fair trial