I’m the name of God, the Most Merciful, Most Kind
You can call Allah, God but you have to be careful to whom you are using the word “God”, if you are referring the word “God” to Allah, then, there’s nothing wrong with.
But, beware, if you call refer someone like Jesus as God, then, definitely, no. And, if you refer “God” to the Creator and not to anyone and anything, not even to Jesus Christ, then there’s nothing wrong with.
But, if you say “god” then it is wrong because anyone could use this word “god” but if it is with capital letter “God”, then it is ok.
for example, God Has Give to prophet Muhammad special miracles. Or, God has given the miracle of waking up the dead to Jesus Christ, then it is ok to use the word “God”.
And, it is much preferable and much respectful if you call simply “Allah” instead of “God” so that you won’t make confusions with other, but if you want to call Him, God, then you can but you have to be very careful on whom you call God.
Conclusion: you can call Allah in any language as long as you don’t refer to anyone, not even to Jesus, or anyone, and if you refer “God” as your Lord, the Creator of Jesus Christ, the only one true God, then it is ok to use it.
Hope it helps.