Yeah, the question then, if defeat becomes a certainty; Will he be content with retreating into obscurity, or quietly take his own life? Or will he out of spite decide to make sure the whole world burns? I fear the latter option, and can only hope that that will be a bridge too far for the people surrounding him, and that they will do what they can to prevent it.
I know that a lot of us are worried, but I'm not sure that doomcasting and discussing worst-case scenarios helps.* It gives you the illusion of control, but usually only makes you feel worse.
What I have that works for me is to only occasionally keep up with the news, and to do positive things within my local community and to also look for opportunities to provide help and assistance to the people suffering in Ukraine. It's not much, but doing a little good helps me feel a little better.
*I say this not to limit what you want to discuss, but only to note that when you are preoccupied with worst-case scenarios, you will naturally get stressed out. Given that you can't control this ... unless unbeknownst to us, Joe Biden spends a lot of time posting on enworld under a pseudonym, that stress can be unhealthy and bleed into your life. And I think we have all had enough stress the last few years.