Defending against nationalist Balkan-family: advice?

Assalamu Aleykum

Before 2 years i converted to Islam alhamdulillah.

After a while, my mother-side knew about it and they flipped out. They meant that i am now on my way to terrorism to Syria so they begin to manipulate me. I was going to a Salafi-Masjid, which was not fully ok (i reject Salafiyya) but the Brothers were nice and welcoming.

So my family doesn‘t undestand much about their religion (serbian orthodox) and Islam. They even reject their Bible as a devine word for them. They‘re just ,,traditional Christians,,.

So what can i do?: I still live as a 22 year-old with my mother and i get asked and controlled by the family, where i go etc. They say i even can‘t be a Muslim because i ,,need to be born as a Muslim,,. They yell at me and claim that they watch me through cameras etc.