:salam2:
Borther i cant properly say the exact word as its not coming in my mind,ill soon inshAllah let you know if i come across it.Ana muslim jadeed(i am new muslim) seems fine or else saying Aslamtu Islam deena(accepted islam as my religion) or Aslamtu Islam(I have accepted Islam) are all fine
The word for revert would be oda but i currently not getting how to add it to i am revert muslim.Anyway i hope helps you.