Why are condoms so hard to put on?

I have trouble rolling the condom to the base of my penis

The condom will cover half of my penis but won’t roll to the base of it.
Every time I roll it down, I rolls right back up?

I’ve tried about 5 different kind.

Magnums are the best I’ve tried
they cover most of my penis.
& my penis isn’t huge or anything, I’m average

I just have trouble rolling it down & keeping it rolled down.

I've wasted 6 condoms practicing..

I need advice & tips please
1 y
I remember finding condoms under my moms bed
The brand was called ONE
I used to steal some and try them on

Those are the only condoms I never had a problem with
I’ve been searching for those
Why are condoms so hard to put on?
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