Uncircumcised – Foreskin partially covering glans when erect. Normal?

I’m an uncircumcised guy and I have been overthinking something lately.

When I’m erect my foreskin can retract fully without pain, but sometimes it still covers a small part of the tip (glans). It’s not tight and I don’t have any medical issues it just feels like I might have a bit of extra foreskin.

My concern is mostly mental. During sex, what if the foreskin moves forward and partially covers the glans while inside? Is that normal? Does it affect sensation or performance?

I’ve also been wondering (maybe irrationally) whether increasing penis length or girth would make the foreskin stay fully retracted when erect. Is that even how it works, or is foreskin movement during sex completely normal regardless of size?

There’s no pain or tightness, I’m just looking for clarity and honest experiences from other uncircumcised guys.

Thanks.