@Malika: Some well-known brokers that have copy trading features are as follows: Etoro, Avatrade, Pepperstone, VantageFX and ICmarkets.
@Damar: I personally don't like OctaFX, I left it in 2015 and have never used it since because I was once cheated (my TP wasn't hit even though it should have been). Besides that, OctaFX's regulation from offshore countries is a concern for me. The brokers I recommended above have better regulations because they are located in developed countries, not offshore ones. For OctaFX, I personally do not recommend it.