Hi,
How can I customize arrowhead? I’d like to have arrows like [1], or [2], but all I can get is this

Note that the head of the arrow is proportional to the length of the arrow. Is there any way to make the head smaller or shorter?
[1] https://media.geeksforgeeks.org/wp-content/uploads/20190420012849/2_11.jpg
[2] http://www.edwardbosworth.com/My5155_Slides/Chapter12/SystemBusFundamentals_files/image002.jpg