Bytes are cool but highly unreadable. Imagine telling someone
Hey, my name is 00101011101010101020
It’s easier to encode data so it is more human readable . Some common encodings include -
1 character = 7 bits
Every byte corresponds to a text on the computer .
Here is a complete list - https://www.w3schools.com/charsets/ref_html_ascii.asp#:~:text=The ASCII Character Set&text=ASCII is a 7-bit,are all based on ASCII.

1 character = 4 bits
A single hex character can be any of the 16 possible values: 0-9 and A-F.