Praise be to Allah.
If the imam reviles the people and causes difficulties for them by making his khutbah too long, then there is nothing wrong with them praying Jumu‘ah in the other mosque. Rather there is nothing wrong in the first place with a person praying in whichever of the two mosques he wants, but it is better if he prays in his neighbourhood mosque, unless there are things in the Turkish mosque that are contrary to sharee‘ah, that you have not mentioned, which made you feel reluctant to move to it. In that case you should tell us about that.
You should advise the imam and call upon him to make the khutbah shorter and pay attention to the congregation’s situation.
Shaykh Ibn ‘Uthaymeen (may Allah have mercy on him) was asked: Is it permissible for a worshipper on Friday to leave the mosque that is in his own locality and go to another mosque that is further away, because the khateeb there is more knowledgeable and speaks well.
He replied: It is better for the people of a neighbourhood to pray in their own mosque, so that they can get to know one another and create friendships among themselves, and thus encourage one another. But if a person goes to another mosque for religious benefits, such as acquiring knowledge or listening to a khutbah that will have more of an impact on him and help him gain more knowledge, there is nothing wrong with that. The Sahaabah (may Allah be pleased with them) used to pray with the Messenger of Allah (blessings and peace of Allah be upon him) in his mosque, because of the virtue of the imam and the virtue of the mosque, then they would go and pray in their local mosques, as Mu‘aadh (may Allah be pleased with him) used to do at the time of the Prophet (blessings and peace of Allah be upon him). The Prophet (blessings and peace of Allah be upon him) knew about that but did not rebuke him.
End quote from Fataawa Islamiyyah.
See also the answer to question no. 13766
And Allah knows best.