The 1s on the little concave bit mean you know where the nearest 2's second flag should go, even though you don't know yet where the 1 is. Then that gives you some to clear.
There are definitely ways to progress from here, but they may be more advanced?
The 1 SouthEast of the bottom 2 touches two tiles, and the 1 immediately West touches a superset of those two. The difference between the larger and smaller set must be clear. And you can go further off of that.
I might be overlooking something tho.