here is explanation

Kimsinin ,kimsiye ,kimseler

some corrections

Kimsenin , Kimseye , Kimseler

"Kimse" means in english "one or anyone"

kimsenin maens "anyone´s"

for example

Kimsenin yardımına ihtiyacım yok. I dont need anyone´s help.

kimseye means "to anyone"

for example

Kitabı kimseye verme. Dont give the book to anyone (or dont give the book anyone)

kimseler means "people"

for example

Bazı kimseler buraya geldi. Some people came here.

What is the difference betwen

Kimsinin ,kimsiye ,kimseler

thanks in advance

"Kimseler" ---> anybody, nobody (same with "kimse")

"kimseye" --->  for example:
I didn´t give my pencil to anyone.
Kalemimi kimseye vermedim.

"kimsenin" ---> for example:

Nobody has a pencil.
Kimsenin kalemi yok. 

I hope you like. 

"Kimseler" ---> anybody, nobody (same with "kimse")

"kimseye" ---> for example:
I didn´t give my pencil anyone.
Kalemimi kimseye vermedim.

"kimsenin" ---> for example:

Nobody has a pencil.
Kimsenin kalemi yok.

I hope you like.