How to stop my 11 month old from biting and hitting?

For starters, I’m completely against spankings, taps to the hands, swats on the butt, hitting, etc.

my 11 month old has recently been slapping me in the face and biting me. I understand and know it’s all normal/ common.

He’s teething so I’m sure that’s giving him more desire to bite also.

But to stop it all I’ve tried ignoring it, firm “no,” “no” and explaining why, “no” and redirection, “we don’t hit,” “that’s not nice,” “that’s naughty,” etc.

sometimes he cries because I’ve told him no, and most times he just continues doing it. Obviously once I redirect him he stops, but then he’s back in my face biting my arm or slapping my face.

Is this just an awful phase he’s picked up? Will he grow out of it? Is it is a phase, how long does it usually last?

I know biting can last for years, but is there anything that you’ve done that’s worked to stop an 11 month old from slapping and biting?

Thanks!

Edited to add*

I usually do back away or move out of reach while saying no. Say for instance I’m holding him and he’s slapping me I’ll put his arm down, say no, explain why, while moving out of reach and then redirect.

And I can’t always walk away and ignore him because sometimes he does it while I’m holding him in the store or what not. If he does it there then I put him in the cart or stroller.

I haven’t tried dramatically crying. I’ll try that next!