I’m confused with my sexuality

I have been with men my whole life until about 20 years old. I always knew I liked females and I thought that I preferred them over men. I ended up marrying a women and now 2 years later, I’m second guessing everything. I find myself thinking about men and what I miss about being with a man, sex being one of them... and sex is a huge problem in my marriage.. I have a very high libido and want it almost every day, and she could go weeks or even months without it. I guess I was also very ignorant and thought that being with a woman meant that the relationship couldn’t be as toxic as being with a man, and I was so wrong because my marriage is the most toxic relationship I’ve been in... so now I think to my self like well damn, if I knew it was gonna be like that, I would have just stayed with men...But with that being said, I don’t really know what I am or what I prefer, and it’s confusing me so much and I feel embarrassed. Can someone please help me understand this? Or give me any opinions?