Learn Swedish: Man får aldrig tvinga ett barn. - One must never force a child.

This is a very common trap! While får does mean "may", adding a negative word like aldrig (never) or inte (not) changes the meaning to "must never" or "must not". If you want to forbid something in Swedish, you use får inte or får aldrig. Using måste inte actually means "don't have to".

Where does the negative word aldrig go when there are two verbs in the sentence?

In a standard main clause, negative words like aldrig (never) or inte (not) always go exactly between the two verbs. The word order rule here is: Subject (man) + Auxiliary verb (får) + Negation (aldrig) + Main verb in infinitive (tvinga).

Why is there no att before tvinga (to force)?

Because får is an auxiliary (helper) verb. Just like in English, when you use a helper verb like "may", "can", or "must", the following verb is in its bare infinitive form without the word "to" (att).

What does the word man mean in this context?

Man is an indefinite pronoun that translates to "one" or the general "you" in English. It is used when a statement or rule applies to people in general, rather than a specific person.