I created a sample .sh file with script like this:

if [ -f "/Spool/Cognos/Cognos.xlsx" ]
then 
    echo "File exists"

else
  echo "File not exists"
fi

However, I would like to change so that it could read file with dynamic names, the files that will be uploaded in the folder /Spool/Cognos will be something like this:
Cognos Aug24.xlsx,
Cognos Sep24.xlsx,
Cognos July24.xlsx, etc.

How can I change the if part of the script above? I tried
if [ -f "/Spool/Cognos/Cognos*.xlsx" ] with * as wildcard but it seems like it does not work.