いきまして is not wrong, but sounds too polite. 行って is more common.
日本人友達 doesn't work well.
The reading of 間 is あいだ there. Or かん is also used for formal situation or in written language. You can avoid misreading by using the kanji 間 instead of hiragana ま.
ほんっとに is too slangy.
はたらき is a noun in はたらきです. You are not "action/work/activity/function/effect".