How to take picture of my .vrm with unity assets for free

I recently made a new model with vroid, but added some accessories with unity. Since I can't use vroid picture mode, I tryed my usual program (vrm doll play) cause I could still export the model as .vrm, but the program closed the moment I draged the model there so...

I need a good quality png of my model but I have no idea what to use now. Any help?

(im not willing to pay for any programs)