Hello. I have a problem with my road bike. The top tube seems to be too long for me. When I do a long ride, my saddle is not confortable, I think it's because it's too far from the handlebar. My saddle is adjusted at max so I can't make it closer to the handlebar.

I have an idea, I would like to change the stem for a smaller. Is it a good idea ? Is there many sizes or is it universal ?

Do you have another idea or I should just change my bike ?

Thanks.