Not sure why my code isn't working, can someone explain?

This is for the counting card challenge : https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-javascript/counting-cards#

I understand you can use switch or if else statement, can someone explain why my method doesn’t work when you put multiple cards as input?
My code so far*

let count = 0;

function cc(card) {
// Only change code below this line
if (card ===2 || card===3||card===4||card===5||card===6){
 count=count+1;
} else if (card===7||card===8||card===9){
 count;
} else if (card===10||card==='J'||card==='Q'||card==='K'||card==='A')
{
count=count-1
}
if (count>0){
return count+ " bet";
} else {
return count+ " hold";
}

// Only change code above this line
}
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Challenge: Counting Cards

Link to the challenge:

It looks like you accidentally deleted the part of the post where you tell us what you need help with!

I figured it out now, I didn’t capitalize the word, now I couldn’t delete my thread, I feel so stupid, so sorrry!