Always blames me/ never apologizes .. is this normal?! 😞

Anyone else ALWAYS being the one blamed for everything? I get that us as humans aren't perfect and if we both are in therapy trying to better ourselves, why does one feel inferior to the other and put the other one's progress down, blame them for all the arguments/ never apologizes because why should he, he's never wrong?! I feel like my opinions or statements are being taken too harshly or literally and yes we've spoken to our own therapists about this and to one another but ever so often we end up like this, where it feels like an all out battle. Been together almost 2 years and we live together, have 2 babies (twins) 7 months old. So is it right that one is ALWAYS wrong? I feel like no one can be right all the time and should also apologize.