Everything he does and says (and has done/said in the past) is calculated to make you feel this way, so he can carry on with his perverse modus operandi which is to destroy others to make himself feel better about the overwhelming insecurity and misery he carries around inside on a permanent basis.
There is NOTHING you can do to fix that.
This is how controlling, manipulative, abusive men operate and it can happen to ANYONE. Truly ANYONE. Wasting energy wondering g what you’re doing wrong will achieve nothing because the answer is - you’re not doing anything wrong ITS HIM, not you. And he will do this to every person he ever has an intimate relationship with.
Now… imagine he is a disease you’ve caught. A serious disease that will kill you, but not before it first destroys your body and mind. Imagine if a doctor told you: if you don’t treat this disease you’re going to suffer unimaginable pain, you will cease to recognize yourself, you’ll lose everything you value about your existence.
You can avoid that by sending one message (“this is over, don’t contact me again”). And block, disengage and never see or speak to him again. Kind of an inoculation - one nasty pinch and a few days (or weeks, or maybe even months) of feeling a bit sick and dizzy and low.
Or you can keep doing what you’re doing and suffer the long term effects - by which time the vaccination will no longer be effective so you’ll have no choice but to cure yourself, deal with the sick/dizzy/low for five times longer and from a starting point 500 times worse.
I’m not joking or being flippant when I tell you that this is a fight for your life and I don’t mean because he may physically hurt you (although it’s possible), but because when someone does what this man is doing to the inside of your head it is INVISIBLE but it is VIOLENT and it is DAMAGING.
So pick your preferred cure and take steps accordingly.
I cannot recommend reading Lundy Bancroft’s book Why Does He Do That? more strongly… (download on kindle or Apple Books app). It is incredibly insightful and compassionate and a source of strength in turbulent times.