Hey Costanzo. Welcome to the forum.
Stropping is a technique to refine the edge of an already sharp blade, usually by dragging the edge across a substrate loaded with some fine abrasive. But it sounds like you are more interested in getting the blade sharp.
This subforum is loaded with information on how to sharpen a knife, so you may want to look around and do some reading. There are several threads on how to sharpen a knife properly. This particular thread is more about a couple aspects of stropping.
In general, with sharpening, you want to raise a burr along the entire edge on both sides, then gradually remove that burr by using ever finer stones and lighter strokes. There are other techniques as well.
If you're not having success sharpening, try painting the edge with a Sharpie and then make a dry pass with the stone. How much and where the ink is removed will tell you a lot about why your edge is not getting sharp. It may be that your stone angle doesn't match the angle of the edge bevel. Or it may be that your edge is especially dull and it will take a while to get a decent edge.
I'd suggest you read some of the threads here so you understand some of the basic issues, such as raising a burr. Then use a loupe and a Sharpie to evaluate your edge. After that, if nothing is making sense, start a thread explaining your problem, the equipment and technique that you are using and what you are seeing with the loupe and the Sharpie. Whether you want to do that with words or video is up to you. Some people prefer videos, others find them too time consuming to watch.