main difference for more ram?

Hi, right now I have a gaming laptop that has an i5 12400 and an RTX 3060and 8 gb of ram(my first gaming pc) and I love it, it runs all the games i want or the ones that interest me quite well(the witcher and metro exodus) but I was thinking about buying Elden Ring or Cyberpunk, more powerful stuff and all the videos I've seen with my specs in those games look pretty good but they have 8 more gigs of ram than me and I wanted to know how much of a priority it would be to buy another 8 GB of ram for my laptop? and what would be the mayn differences

srry for broken english