yes those things make you hot but dont restrict your breathing
Restrict your breathing? Are you wearing a gas mask, or something else that is not air permeable?
I wore a cloth mask while laining both days on RH (outdoors) and it certainly gets warm, but I switched to a KN95 while davening and immediately felt cooler.
I wore a cloth mask laining on YK morning (indoors) and felt a bit warm when I started laining, but by shlishi it was back to normal. I again switched to the KN95 after finishing and had the immediate cooling.
I actually forgot to change out of the KN95 for laining at mincha (oops) and that was the only time that I felt stifled, but that was a short laining.
You really need to experiment with masks in a non-davening setting and see what works for you.
If I was the Baal Mussaf/Shacharis I don't know if I could have done a mask for 2-3 hrs of straight chazanus, but for laining on an average Shabbos (I've been on every second or third Shabbos since Shavuous) and giving a daf shiur, I can't say that I felt that my breathing was restricted in a surgical or cloth mask.