how to count file with sub folder in linux code example

Example 1: linux count files in subdirectories

find . -maxdepth 1 -type d | while read -r dir
do printf "%s:\t" "$dir"; find "$dir" -type f | wc -l; done

Example 2: shell show number of files in each folder

du -a | cut -d/ -f2 | sort | uniq -c | sort -nr