FAQs accordion solution

As a new front end dev my biggest challenge was not knowing that you cant have the same class on multiple buttons when using it for the same function in JS, I'm aware there is a way to do it however I wanted to see what I could come up with on my own. By the time I realized my problem my project was basically done and i'd tried multiple solutions, which was beyond my skill level. So I took my original code which was working for one button and I changed the class names for the others and copied pasted my JS.

areas I'm unsure of my overall structure of HTML and the font which I could not find in VS (work sans). Also I know theres another way to toggle the icon I just came up with the button element for the icon and left it that way cause thats my own thought process

if anyone could recommend javascript that I could use, such as one function for example with multiple buttons with the same classes.