You came across as a nice guy, well meaning, BUT a complete bandsaw novice. I don't understand why you wouldn't do some research into what the main parts are commonly called BEFORE making a video about one?
You kept referring to the bands, the belts, the blade, using them incorrectly. This takes away your credibility in my opinion.
The bands go around the wheels, as you call them rollers. They are made of thin rubber like a bicycle inner tube cut into 1" wide strip, IF they are there at all. I suspect your wheels don't have them.
The belt is what drives the bottom wheel and is marked with a coded number by the manufacturer.
The blade is what does the cutting with sharpened teeth on one edge.
The tracking adjustment is what keeps the blade centered on the wheels.
The guides only support the blade, at the rear to keep is from being pushed off the wheels, and on the sides to prevent excessive twist when cutting a radius. A properly tracking blade will not rub on the side guides except when overly stressed cutting a too small radius.
Let the teeth do the cutting, and do not exceed the limit of the blade width, which determines how small a radius you can cut. A 3 wheel saw may be more sensitive to this than a 2 wheeled saw because there is less contact on the wheels to keep the blade tracking.
Our member, Bill, from Falberg saws knows all there is to know about 3 wheeled band saws:
Cutting Corbels With a Portable Bandsaw - YouTube