Once you're that far ahead, the best thing you can do is get behind your allies and start pushing objectives. The largest thing I see at silver with ADC downfall is they get ahead and continue to obsess over individual gold instead of hiding behind allies.
As a JG main that is off support, with the new ranking system I did fills and found out I was way way way more impactful as ADC than I am as jungler, and way better. Something I really had no idea about as I never played ADC. It's all about taking your lead to the mid lane and playing safe, not "I'm ahead, time to open a can of whoopass."
Basically, I'm a JG main that doesn't play ADC at all, but when I got Miss Fortune I consistently did much better than I do as JG just by hiding behind allies and pushing objectives, even when ahead. Honestly, those games even felt like easy mode despite having 0 laning experience with csing etc.
My runes and items looked way different than yours too, but IDK I'm not an ADC main so maybe they were crap?
https://i.imgur.com/zKzRvBD.png
I guess for me I just see ADCs throw a lot in silver by trying to farm CS a lot and stay ahead when they should siege up behind allies, so when I got ADC, that's what I did.