Getting input in bash from when running at command line

Question

So I recently tried getting a string as an input in a bash script which looked a little something like this:

#!/bin/bash
while getopts s: flag
do
    case "${flag}" in
        s|--sample) sample=${OPTARG}
        echo $sample
        ;;
    esac
done

^{The credit for most of this code goes to baeldung at 2.2.}

If I try to run this code, it works, but only if I use -s. If I use --sample, it just echo's ample. Is there an easy way around this