Indeed, you cannot time travel physically in this realm, not by a time machine (as presented in science fiction movies), nor by casting a spell for this. You live in the present and always start in the present. Its important to understand this.
But, here is a little thing that might make you happy. Advanced practitioners will tell you thattravel through time with astral projection certainly possible.
The first step in all of this is to achieve astral travel and projection by reaching the astral plane. Just focus on relaxation and meditation until you are able to do this successfully by separating. You will know when you are ready. Then as you practice begin to guide your astral watcher, like a remote control, where you want to go. You will find many wonderful experiences open to you.
Here is a guide for time traveling through astral projecting I have found for you:
But please keep in your mind that physically time traveling is from science fiction only.