[Edited w/ more comments] Recently had a Facebook onsite for a New Grad SWE role. All the questions asked were popular LC Medium tagged (have signed their NDA, so won't be sharing details).

Behavioural: Quite common questions - I was asked questions around conflict resolution, a project that I'm passionate about and how do I handle feedback. There were a lot of follow-up questions to each of my responses, but in general it seemed more like a conversation than an interview. I searched for the frequent behavioural questions asked by FB and also looked up their mission, vision, values and tried to have stories around common behavioural questions - strength and weakness, proudest achievement, one time I failed, ...., keeping in mind their core values. As long as you are able to communicate your thoughts well, you should be fine. Hope this helps!

The technical questions asked in the Round 1 and Round 2 below were LC medium and listed in the recently asked question list for FB.

Round1: Solved Q1 (Related to arrays and hashing), Solved Q2 (Related to matrices) - but couldn't optimise
Round2: Solved Q1 (Binary search) and discussed an optimal solution (but couldn't code it), Solved Q2 (Binary Tree) - but gave the incorrect time complexity in the first go, got it right later

Do I have a good chance? Any idea?

Edit: I did get in! I guess they really look at your thought process and problem solving skills.

[Update] My onsite was divided over two days and ended on Thursday. The following Tuesday I got a call from my recruiter about the offer. I accepted since I did not have any others offers in hand.

Compensation (non-negotiable):
Base: 129,000 USD
Sign-on: 50,000 USD
Relocation: 10,000 USD
Stocks: 150,000 USD over 4 years