do u have recommendations for mangas with physically strong female leads and normal or even physically weak male leads

Sumomomo Momomo

I've read one chapter, and it was quite funny. It's shoujo, though (I'm fairly certain).

Matsuri Special should fit.

For strong female leads:
Maid-Sama! - physically strong but doesn't show too often
Orange Marmalade - physically strong but doesn't use it
Oresama Teacher - she's a fighter. For reals
Soul Eater - Makaaaa~
Steins;Gate - Boukan no Rebellion - side-story to Steins;Gate
1/2 Prince - not physically, but in the "game world" she is strong

Strong females with important roles (they're not the main character but they're either the main love interest or heavily plot-relevant):
Beelzebub -strong females errywhere
Chou Dokyuu Shoujo 4946 - she's like 80 meters tall. Better be strong.
Deadman Wonderland - Female is ranked higher than #1, she's #0
Green Boy: Shouting to You - she's a VERY good boxer
Hanzasky - beats his ass for fun
The Breaker - martial arts females <3
The Breaker: New Waves - more of the same. a good thing
Onidere - delinquent female girlfriend
Yandere Kanojo - delinquent female girlfriend. Again
Wrestle! The Under Ground - SUPER MATURE WARNING!
Yanki-kun to Megane-chan - Yankee girl is mad krazy
Zippy Ziggy - she doesn't take shit

Be warned that not everything on this list is pure romance (I assume you're looking for romance because you wanted a weak male lead), though much of it is.

Nisekoi the main girl beat the crap out of the main character.

kubera

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I recommend Shitsurakuen and double recommend 1/2 Prince.

Ah, Tokyo Crazy Paradise might also work. The main male character isn't weak, but he's still not as strong as the lead female.

I second tokyo crazy paradise

I fourth 1/2 Prince, second Shitsurakuen, second Oresama Teacher, second Kaichou wa Maid-sama, and third Tokyo Crazy Paradise.

What I'd like to add to the list is:
Gokusen. This concerns the Yakuza female heir, whose only goal in life is to be a good teacher.

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How about Saiunkoku Monogatari?

TS said PHYSICALLY strong.

anyway, I think Saver and Angel Diary fits the bill. The strongness of angel diary protagonist isn't shown until later chapters though

Oh and Basara might work. She's gutsy and leads a army. But I dunno about her hand-to-hand combat ability. I've seen her fight, but she doesn't have spectacular swordsmanship or anything, she's just clever and knows how to use her enviroment well in a fight

LOVE HINA.

OP asked for weak male right? Well, love hina sure qualifies... except in the epilogue though.

Seirei no Moribito
Shut Hell
Blood+ (Only watched the anime->In this one, most of the main male characters are not really 'normal' let alone 'weak', though.)

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Surprised its not mentioned, hSpecial A is one of them and its very good in my opinion.

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High above the tree tops.