when drawing a pocket knife i wanted to add color to the blade i selected the whole drawing but got only a little circle to fill in why can’t i get the part of it i want to fill in the area with color ?
Select the group, press F3 to enter in the group, select the shape you want to change, add color, and press Ctrl+F3 to exit the group.
See menu Shape - Group.
LibreOffice Help on Working with Groups.