- irrespective of whether your foreskin retracts or not - and even if you have no foreskin in the first place, so the concept of "logical and normal" loses any real meaning.
Logical is that the condom is a
must until you are married, and anyone who convinces themselves otherwise, need not get so fussy about how their foreskin functions.
Similarly, "it looked silly" really means nothing when it comes to a condom-covered penis.
Our standard advice for putting on a condom is - you get an erection, and you roll the condom on. That's
it, that's all the instructions. No mucking about trying to pull your foreskin back, forwards, up, down or sideways, however it is when you get the erection, that's how it is. In almost all cases, when you are
actually with a young lady (or might I say, even an older one

), you will be producing "pre-come" or "pre-ejaculatory fluid" (even if you do not at any other time) which makes the inside of the condom very slippery so that your foreskin will in short time move to whatever position - or range of movement - naturally suits it.
If the glans is sensitive and only the tip is showing, then that may feel uncomfortable against the end of the condom though almost all now have a "teat" on the end which should be clear of the tip of the glans at that point. It
may be more comfortable to put a small drop of commercial lubricant into the tip just in case the glans is that sensitive.
The presence of the condom prevents much "drag" tending to push the foreskin back. There is
always a risk that if the condom is insufficiently lubricated on the
outside, it will either get pulled
off the penis, or the vagina will resist its entry so that all the pressure of a thrust will be applied on the very end of the condom and it will burst. Either of these situations and particularly the latter, given just how tough condoms actually are, indicates a
severe lack of lubrication.
A large part of the pleasure of intercourse is that you are having it with
the girl. This is why fellows complain of "premature ejaculation" - it's not the
physical stimulation, simply the
excitement of being with her and being
allowed to have sex, is the most exciting part, so in general, a little less sensation because the glans is covered will barely be noticed.
In
your case, losing your erection when you
prepare to have intercourse demonstrates
another related effect - you are too
anxious about actually having intercourse. This relates to an attitude that intercourse is the important part, and the badly mis-informed supposition that it is to the girl, even that important anyway (other than from eagerness to please
you) as in actuality, she is not even particularly likely to have an orgasm from intercourse on its own. If instead, you concentrate on
pleasuring her and let
her put on the condom and direct you into her when
she feels she is ready and only
if she feels that way (which means she will not be overly "tight" as you enter), you are likely to have much more success. If at that point you
do lose the erection, it does not matter; you simply keep your concentration on pleasuring
her.