A lot of questions (Assassin's Creed: Origins)

Hey all, so let's begin.
1) Is it possible to sell Carbon Crystals?
2) I Decided to pereproyti game hanged Baleka to 45 level, passed The Hidden Ones, but there is a problem Bureau invisible STUPIDLY burned. How, why, when it happened, the reason? No additional quests, clear the stump is no more, everything is 100% completed, but the office stupidly burnt them
3) How to create a Empty Save Slot? (To start a new game, saving progress)
4) How to use the panel animus if not litsuhi play?
5) some enemies seen already at level 58 there is no opportunities to pump yourself no?
6) Sometimes when you start the game, the process terminates unexpectedly, no errors, nothing. What is the reason? Tried different versions of the game, all the same. Windows 10 x64 if that.
Thanks in advance for your answers.