Modem installed, but on the far end of the house.

For this I requested if they would be able to help me centralize the router to the middle of the house, but tech who came didn't seem interested in doing so. I do not need a mesh extension and would prefer all parts of the house get fair access, not one corner. Only hardwire ethernet lines I plan is a pc/network switch and maybe a projector? Is this something that can be handled by moving the box to the next room or room after?