Is this a toxic relationship?

Hello

I 'M35’ am in a relationship with a woman 'F39’ and it’s been 8 months.

Over the course of these months I am slowly feeling that I am in some sort of a toxic relationship. She is extremely short tempered, easily irritable and small things get big reactions out of her. Add to that, I can see some controlling tendencies in her as well.

Most fights are yelling matches. My confidence is taking a hit, since I am always being corrected for every small thing or the other. And also, another thing which irks me is that if a man has made a pass at her, she doesn’t feel the need to cut him off her life, which I find very disrespectful ( please tell me I am not over reacting about this ) and when I point out she reluctantly says ok I will cut them off, but for some reason she doesn’t see that it’s that big of a deal ( to not cut someone off if they have hit on her )

If a friend had asked me about a situation like this in their life I would give them the obvious answer but as always when it comes to one self it gets all muddled up. My question is that is it possible to overcome all this ? Has anybody ever managed to get past all this and live happily ever after? Or this kind of person and situation never gets better ?

TLDR- feeling very overwhelmed in my relationship. Advice needed.