Not a very important question, and sorry if I've asked before but I'm wondering if you guys support withdrawal to Native segwit (bech32) addresses?
Yes, you can withdraw to native segwit addresses.
Look at the following post made by TheQuin.
Query: Can I withdraw my funds in Freebitco.in to a native Segwit Address using Slow Withdraw option?
PS: I'm not the lucky winner who won the lottery

I'm just another user
Yes, you can. Bech32 addresses can be entered on the withdraw page but you can't set the default withdrawal address on the profile page. Adding that requires a major database reorganisation that would require a lot of downtime.