I just put together my new build and i am idling at 60C. I am using a Ryzen 7 7700 paired with the Corsair H115I ELITE CapellIx XT. I have coolant temps of 30c and idle temps of 60C+. I should note, i am not using the tension CPU bracket that i thought this cooler came with(it doesn't) and instead i am using the 4 screw AM4 bracket. I only mention this because i am worried it may be a tension issue since i always see them install these with the tension bracket when looking on youtube.
I actually built a PC for a mate with almost exact same hardware a couple of weeks ago. Temps were perfect from get go and this time round I used stock thermal paste from the cooler.
Unmount and clean off thermal paste. Reapply thermal paste. Carefully place pump back on thumb tightening each screw in a star shape. Do a few turns per corner to ensure even pressure. TBH, I didn't really know when to stop screwing as it didn't feel like it was getting tighter to an end point and I was also being aware of overtightening too. From memory, I think I did maybe 12-16 turns of each screw? Good luck!
That worries me because my four thumbscrews can be tightened all the way down.