Is 4 credit cards too many?

I (21m) recently opened my 4th credit card and got the post cc clarity thinking about it being too much. Currently have Wells Fargo active cash card(my first CC that I opened when I was 18), my second is Discover It(got when I was 19), my third is the Sapphire Preferred(I travel 3-5 times a year so I thought it was worth it and was also 19 when I got it) and recently got approved for the Chase Freedom unlimited card and I think it’s better than the active cash card and they gave 0% apr for 15 months for balance transfers and no interest