Just make sure to follow all safety procedures and watch a video, and in most cases it's one of the easiest things you can do.
Now if the people who built your PC were, like....bad at it, it might be somewhere harder to pull out. But at the end of the day your literally just unplugging it, yanking it out, snapping the new one into place and plugging it back in. It's surprisingly intuitive.
Now, as for the actual card you're looking at....uh, you'll want to get someone else to answer that for you since I haven't actually looked at cards in years, but my understanding is that upgrading to the same tier one generation up is maybe not the move.
https://twitter.com/OocWTC/status/1348011667976699904?s=19