Nope - you’re not a woman as defined in law. Not in UK, not in the majority of the EU and definitely not in the rest of the world.
You’re a man and if you died without ID a coroner would know you’re a man. People who interact with you know you’re a man.
People may collude with your mental health issues but that doesn’t make you a woman.
Mental ill health doesn’t allow me to self identify into another race, age, disability status, religion.
Why anyone thought they’d erode sex based rights is beyond me. But the correction is happening.
You may have certificated ‘gender reassignment’ but saying you changed sex shows the depth of your self delusion.