Reserve means to retain something and to keep something for a particular purpose or time.
I want to use reserve but with the meaning of retaining something initially/in advance/before the time.
As prepaid, for example, in which you usually pay for something, but here, you pay in advance for that thing.
I wonder if there is no such thing as "pre-reserve" since Google showed no result of it. I think this is because "reserve" has the retaining in advance implicitly, but as we use this term in my language, I want to know if there is a one in English.
For example, I say: "In order to get an appointment at the salon, I should make a reservation ahead in time." After a while, I would say: "Okay, so we made a reservation, now we only need to wait."
The example is to state the difference in my point of view between the two. I would substitute "reservation ahead in time" with "pre-reserve" if it exists.