how do you say "我的兴趣爱好很广泛" in English？
could that be "i have many hobbies"?

Question

Answer

I did a Google translation and it came up as:

"I have a wide range of interests and hobbies".

The translation "I have many hobbies" does not indicate that your hobbies are over many different areas.

Answer

"My interests and hobbies are extensive."
or
"My interests and hobbies range over a wide area."
Probably the first one.