About to be fired

I'm a new csm for a healthcare startup and I'm 90 percent sure I'm about to be fired.

In 2 months I've received no training on how the app works. No information on what clients use what features. Our developers are very disorganised and tickets go unsolved for weeks and months.

My CEO just asked me what my sales figures are in a big meeting and I'm just left with a feeling of complete dread.

My weekly presentation also made little sense since I basically have no idea what is going on. I could feel the board thinking, what on earth is this idiot talking about and what has he been doing for the last week.

My last company had really nice clients and a good development team and direction.

This company pays me 20k more but have robbed me of my sanity and happiness.

I want to please the senior stakeholders but I feel like it's impossible.

I ask for things and just don't get them.

Today is the worst day I've had in years. Just a sinking depressive feeling like I'm a complete failure. I am a fool for taking this job.