My puppy bites me really hard, what can I do?

I have a puppy, who I feed, play and live with. He’s my first puppy and it’s a big challenge for me, so I made sure I was sweet, nice and caring to him.

He’s just 1.5 months old but already a big one, since he is an Alabai puppy.

He also has quite big teeth. Ever since he came to me, he started biting, I tried to introduce him some toys but he’s the most interested to bite the real skin.

He’s a very nice dog, apart from some crazy times when he doesn’t control himself, he’s sweet, quiet and nice.

But when he bites, I can scream out of pain and he doesn’t stop, he bites more. He bites so hard, It’s really painful.

So I did something I regret, I’ve tried many ways to stop him and in the end when he would not let me go, I hit him and he let me go, but got even more aggressive. It happened couple times and I can tell he was scared and I regret so much, it’s just my hand had a bloody scratch and his teeth bite really sharp.

I don’t know what to do, I don’t want to hit him, I want us to have a loving, sweet relationship, what can I do?

He always follows me everywhere, I am his favorite human, he sleeps with me, he likes being in my bed and cries if I don’t let him here, seems like he loves me or at least likes me I don’t want to ruin this relationship, but I might have already ruined because his bites are so sharp, he wouldn’t let go until I turned aggressive. I feel sorry, I feel awful, can you please teach me how to make him stop biting?

Updates
1 y
After my aggressive behavior “He avoids me when I call him”, he must be scared, probably didn’t understand why I was angry.

I don’t want him to fear me, I can withstand the future bites if that’s going to make him trust me more.

How do I make him feel trust and love again?
My puppy bites me really hard, what can I do?
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