Bulk Collage Image Maker

Hello, I need a very simple program that makes collages of images from a series of images contained in a folder on my computer. a) it must run the collages automatically in bulk; b) the execution must be totally random; c) it must have the ability to create different types of collages; d) the collages must be composed in a random number from 2 images, or 3 images, or 4 images, or 5 images f) between the images of the collage there must be a space, better if this space can be set in a variable number of pixels g) there must be the possibility to vary the colour of the space between images e) there must be the possibility to set (or not) the rounded edges of the images f) new images created must absolutely be not deformed g) must work correctly both on pc win and on any type of Windows server for vps In other words, the program must do what the collage function of the Fotor software does and you can take inspiration from it to draw an example (see attachments), but not manually like Fotor, but automatically Many thanks in advance