Magdalena,
Could your father fit the description of the men you have had in your life. Promising at first only to be let down? The first thing to identify is why you choose these type men to begin with. Often that is influenced by early life interactions with male figures, especially the father.
Second would be to identify why they did not fulfill what you were looking for. It could be the same reason as the first. If they could not provide the fulfillment you need then what is it you do need? And why? There is always a reason for everything. They could not fulfill what you needed. It had to be partially their fault but could it have been what your seeking was something within you they could never fulfill? That was my experience in my failed relationships. I was looking for fulfillment my father never provided in my relationships. No matter who I married or had a relationship they could never fulfill what I was looking for. I had to resolve that myself. Fortunately I was able to after discovering Jungian psyche and his Individuation Process {self analyzation}.