a lot of questions

[vinicio]

I wrote: I was playing football at the weekend, but my advisor said that the correct form is on weeken?

it can be used at all cultural background or
it can be used in all cultural background?

everybody heard this expression but nobody said a word?
everybody heard this expression but anybody said a word?

I do not let you to critizice him or ??'??

I read Thus spoke Saratustra and he says
let be mentioned, it is good?

this metaphor is accepted between family, friends, and collegues or
this metaphor is accepted between the family, friends and collegues.

I am confused using coma

please could you give me synonimos (it is fine) of
in relation to
regarding to
considering the

I have a lot of questions, sorry if I disturb you
thanks for your answer

[Tdol]

British English- at the weekend
American English- on the weekend

everybody heard this expression but nobody said a word?
everybody heard this expression but anybody said a word?

I do not let you to critizice him
I won't let you cricise him (don't is possible, but less likely to me)

I read Thus spoke Saratustra and he says
let be mentioned, it is good?
This needs work-- who's he? Nietzsche, I presume. Also, it would be a quote, so you should use speech marks

There's no need for the article, but the sentence sounds strange- what's the context?