The concept of future “probabilities” begs the questions can we “travel” to the different probable futures? Is this so?

There essentially is one future that you are talking about. You are not creating separate timelines through a particular change along a single timeline, so you will be going into the future of the moment being projected forward as a future extension. The prior future extension that was in existence when something had not yet been manipulated through time travel, will still be in existence as an energy on that same timeline. The energies, in effect, overlap and will be experienced differently by the players depending on what has changed, or not changed, for them, so people within your acquaintance may have a differing sense of things on an individual basis compared to others who have been influenced directly by changes to their past history. This creates gaps in knowledge, awareness, understanding, and a kind of continuity of purpose, potentially, and you can think of many scenarios that might take place. The movie, Yesterday, is displaying a striking example of the potential that can be created through changing the past for some but not others. That view is quite accurate and, in the instance of the film, the fact that The Beatles never existed through some strange quirk of energy, for all but a few individuals, took place without them being uncreated individually as people or with the loss of the population as a whole. When one’s past has been altered, they will either know or they won’t know, and that will be relative to what others around them know, or don’t know, but life will continue unless there was an ending of a life engineered in some way and then the energies will play out accordingly depending on what people are aware of or has not come into their awareness. People live in the dark about most things while living side by side. You can go through any town or village and there will be many people living there who will not recognize others in the same community simply because they have not met and made an impression on one another, but yet they share many common facilities and circumstances. So this is not so all-encompassing as you might think. Even the disappearance of some major influence like a public figure or a product that never gets invented that is a staple of life, but suddenly is not present at all, would not be perceived and, therefore, would not truly be a disturbance whatsoever, but only to someone knowing of its prior potential and having lived on a timeline where that did come to fruition and then would notice its absence and find that quite amazing, while no one else might be aware, and this is not a paradox, it is a question of where energy has been, where it goes, and what happens as a consequence.