Do I always need greenscreen for this?

Just to have a small video of me playing the guitar and background another movie
Do I always need to greenscreen? In this age and technology ?

It’s the easiest method in Shotcut

My green screen sucks so I need another method

How does it suck?

Decent lighting + backlight will help

To improve it further in Shotcut see - Another way of keying out uneven green screens

No I need to buy new green screen I have got rid of it. Any way I need to find another solution until I buy one