Change the title field

There are 3 fields: "Last Name", "First Name", and "Middle Name". This was necessary because the search filter is divided by these fields, allowing users to select all entries by the last name "Pupkin", for example. The task is as follows:

We need the admin panel to automatically fill in the title field based on these 3 fields when they are completed, or alternatively, remove the title field and display all three fields in a single line without labels, resulting in "Dostoevsky Fyodor Mikhailovich"

How can this be implemented?