How to keyout harsh shadows from green screen footage tutorial

Hello!!
I have shot a green screen footage outdoors an two clips where shot with the sun making some very harsh shadows that are impossible to key out. I am attaching two photos so that you can see what I mean. I there any other way to go around this problem without rotoscoping because unfortunately it' s not an option for me to reshoot the scene. Maybe lume key could help but I am not sure...
Any suggestion would be appreciated!! The first image is the original one. The second is with Keylight only and the third is with Keylight and Luma Key together...
Thanks
Yiannis

Duplicate your layer, key once for the light green, key a second time for the dark green, Output the mattes and combine them to create the final matte. Pre-comp the two shots and use as a garbage matte for the final key by adding a matte choker and making the pre-comp a track matte for your final key.
There are a zillion other ways but Here's what the combined matte looks like from your screenshot.

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How to keyout harsh shadows from green screen footage tutorial

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