I would like to know if I am allowed to do the tarawih in groups in mosque (so with sunni people) since i do not speak arabic and it is really hard for me to do then.
I know how to write and read arabic but very badly and I do not even know how to perform tarawih by myself.

Taraweeh is a forbidden bida. It was not practiced in the time of the prophet. It was innovated by the second caliph as mentioned by the Sunni historians. We respect our brothers in Islam but we do not support the legislation of taraweeh