when sharing by cable from macair to smart tv, the macair display becomes very small

from my mac air M1 i have a cable connection to my Samsung smart tv. However, when i do that the display on my macair becomes too small. I presume it is taking the 55 inch resolution and trying to use the same resolution on a 13 inch screen hence why i can barely see the pointer or items on the mac air/ of course in settings i can see that the large screen has been selected and it appears.. but the writing drops are miniscule hence can. not make changes

Any ideas please

thanks in advnce