I found this neat cmd to use when trying to find files larger than certain sizes e.g
find / -type f -size +200M
If you want files less than that size you can do
find / -type f -size -200M
For other ways to use the cmd check out this post where i got the info from.
This other cmd finds files larger than 10M and calculates their sizes too.
find / -size +10240000c -exec du -h {} \;
Remember in all cases to change “/” to the location you want to search for the files e.g “/home/username”.