I'm so sorry that I may have made troble for you,you lost all your chat transcripts because of my friend request,and I offer my deep apology here.
再问： because of my friend request,改为：因为我批准了你的好友请求。
再答： I'm so sorry that I may have made trouble for you, you lost all your chat transcripts because I accepted your friend reqest, and I only wanna offer my deep apology here.