Green screen recommendations

[ejiqpep]

Hi guys, I'm suffering with Greenscreen already several months. So I would appreciate any recommendations.
As you can see on the right side there is a spill on the head and arm.
My setup:
- 2 daylight bulbs (45 W CFL-Daylight) with umbrellas for subject 45 degree left and right.
- I also tried with and without 2 softboxes (45w CLF-Daylight) to light greenscreen. From what I see the greenscreen is not perfectly lit.
- Greenscreen is 2 meters behind the subject
- I key it in Final cut pro
- My camera is Sony 5100 f1.4, iso 100, 25 fps, shutter 1/50, 1080p

The main problem is that I don't know what I need to adjust. Is it the greenscreen than should be lit better or something else? Do I need more light or should it be dimmable?

Video with background:
https://www.youtube.com/watch?v=2LXJIsYV95o

Raw video with greenscreen:
https://www.youtube.com/watch?v=z6LCrjW9GVk

Greenscreen image:
https://drive.google.com/file/d/1KZdV6WTNAfeuzzjkMhnL9iOdWnfFtKDw/view?usp=sharing

Greenscreen Problems image:
https://drive.google.com/file/d/1x0IBozaoU2gDFQAEjZrIu8tVWpi03fBz/view?usp=sharing

Greenscreen Problems image 2:
https://drive.google.com/file/d/1Nh647wrV_kERR3y4bW6GSNcog8mG5yiA/view?usp=sharing

Keyed out image:
https://drive.google.com/file/d/1jSKZrsVYpdE3i1dxLuJRz81eD2_G_N3F/view?usp=sharing

Keyed out with sample color removal:
https://drive.google.com/file/d/1mTYnjIKM1dLBTb5gmfaI42EG-lcF5Fx0/view?usp=sharing

White/black image:
https://drive.google.com/file/d/1ptEZh4vhIYX9SRQgbEROqfkybv4TD7GD/view?usp=sharing

While/black with sample color removal:
https://drive.google.com/file/d/1dk9yFot721I2bY8lz90wJmZcp0evjLF5/view?usp=sharing

I thought to buy 2-3 cheap lamps with diffuser to light greenscreen on the bottom.

I'm open for any suggestions. Thanks for your time.

[smrpix]

Based on the images you've posted, yes more light would be better -- but that does not appear to be the main issue.
You've got a decent key and just need to refine the edges with the advanced matte tools available in fcpx.

[ejiqpep]

Thanks smrpix. I thought it's possible to make key/light so good that matte/remove spill is not needed as with this tools the image looks not that good.

[smrpix]

It's never going to be automatic. But once you find good settings you can copy them from one clip to another.

[ejiqpep]

Thanks a lot smrpix. It's really nice to get a feedback from the side because it's difficult to be realistic when I see my image for the 1000 time