"Happen to" is to soften a request 👋did something by chance, taking away the intention of something. 👋no big deal if you didn't do something. Ex: Did you happen to bring that costume I borrowed? Ex: Did you happen to look the proposal I sent you. 🚩by chance(decrease the urgency) Ex: By chance, did you decide whether to come on the trip or not? Ex: Do you have the platter you borrowed from me by chance? 🚩by any chance Ex: By any chance, could you give me a ride? Tips: both of them are correct and interchangble. It's probably more about dialects. 🚩if not no worries(no big deal at all of it doesn't work at all) Ex: Could you watch my dog when I'm on vacation? if not no worries at all. Ex: My car is in the shop. Could you give me a ride to pick it up. No worries, I can call an Uber.

Role Play A: By any chance, did you call Marry Audis to see if their party's room is available? If not no worries. B: Yes, I booked it for 7 tonight pm on the 5th A: Perfect, by chance, did they say if they'd have life music that night? B: No, I didn't ask. I can call and find out. A: Awesome, thx! If they happen to have someone's schedule, that'd be awesome. If not, let's find out and let us hire someone.