Trouble finding example material for the DNN functionality

Good day to whichever beautiful person is reading this.
I’m currently working on a project with which i would like to identify different sorts of Dutch fryable snacks. I have trained myself a yolov5 model, which i can convert to the .onnx format, or the .pb format. Only thing is, i’m having a lot of trouble finding example material and understandable information on how to properly implement the model into OpenCV. I have already checked the documentation but i’m still having difficulty getting it up and running. I’m wondering if anyone here has some good examples available, or another source of information which i could use. Thank you for reading and have a good day.