If you need to install Hulu on your PS4, you can do so via PS Store. Just search for the app using the search bar and click Download on its page. Remember that you need to be in the US and have a US-registered PSN to do this.
You can join Discord in PSN using the app on your computer or smartphone. In addition, if you own a PS5, you can do it directly from the console settings.
The thermal paste needs to be changed from time to time because it periodically loses its properties, which can cause your PS4 to overheat.
However,...