Google Analytics - Tag Tracking Buttons?

So I'm trying to setup Google Analytics for the first time and I'm sure it's just ignorance on my part, but how can I effectively monitor the unique buttons being pressed?

The two examples that are getting me stuck:

1) There are many different ways to get to a certain page, and I want to know specifically which button/link was clicked on to get there

2) The developer who helped me with the website added a custom slideshow on the home page. Love it, but I don't know how to monitor the arrows to determine if anyone is actually going through the slideshow.

Thanks in advance!

In case it helps: https://www.treychastain.com/

#1. You can track with Button Class Name/Button ID

You can Google with this keyword

then use this free tool to find button block id

https://chrome.google.com/webstore/detail/squarespace-id-finder/igjamfnifnkmecjidfbdipieoaeghcff

#2. Both Arrows has this selector

.user-items-list-carousel__arrow-button

Thanks! Will look into both of these

@TreyC do you care about the button click as a conversion, or are you just using it to identify which page someone came from? If it's the latter, I would just use the previous page report in GA4 for this as it will tell you that out of the box