The ls command’s -S option sorts the files in descending order of file size.

$ ls -l -S ./Fruits
total 444
-rw-rw-rw- 1 root root 295303 Jul 28 19:19 apples.jpg
-rw-rw-rw- 1 root root 102283 Jul 28 19:19 kiwis.jpg
-rw-rw-rw- 1 root root  50197 Jul 28 19:19 bananas.jpg

When used with the -r option the sort order is reversed.

$ ls -l -S -r /Fruits
total 444
-rw-rw-rw- 1 root root  50197 Jul 28 19:19 bananas.jpg
-rw-rw-rw- 1 root root 102283 Jul 28 19:19 kiwis.jpg
-rw-rw-rw- 1 root root 295303 Jul 28 19:19 apples.jpg