CRY FOR HELP, 50 days old toy poodle, attacking me and running frantically, growls and bites

So I have been struggling immensely with my baby, I am a first time pet owner, and I feel so exhausted and overwhelmed.

I will keep the focus on my baby for now, as I want the best for him.

He bites. Fairly 70% of the time. I think, the biting isn’t a problem in itself, I have read ALOT, watched ALOT, and I am trying my best here, but something happens to him at moments. He has fits. He also humps two of the soft toys that I initially thought he loved playing with. He growls and attacks. To bite. He becomes aggressive and runs frantically.

He digs in the bed and scratches it to the furthest extent with his paws. His general biting is fine but when he has these episodes, he just isn’t under any control.

Things I have tried:

1. Giving him rest. He sleeps but then wakes up and starts crying. He sometimes gets up nice, other times, the same frantic. I have a playpen in the living room, and he sleeps there. I do not have a bedroom big enough for the play pen to be. I sleep in the living room infront of him. Initially I thought I would desensitise him with the TV, but for the sake of his fits related to not napping enough, I use earphones now.

2. Re-direct with toys. He gets bored with one toy v easily. He then plays with bottles, wallets, random stuff. But again, he is so moody, he sometimes plays with them, other times, he just growls and pounces on me, to attack quite literally.

3. I tell him no. I say that to him loudly. It can be a hit or a miss, but he def comes back in sometime. I walk away, and it works, but how do I stop this behaviour, I can solve things temporarily, like 50% times, but he isn’t showing any improvement on a daily basis.

4. I am scared of his behaviour, not for my safety, but for his upbringing. Am I doing something wrong here? I try to play with him as much as possible, he has learnt fetch to an extent, idk what else to do, he is just disinterested.

5. I am considering professional training for him, is it too soon? What treats can I introduce to train him?

PLEASE HELP ME OUT HERE!