you fly from where to where ?
if you fly from KLIA2, quite sure there is enough kiosk to print your boarding pass, even if there is a lot people over there...

i fav kiosk are those at the side/corner of the departure hall, usual people will all group up at the middle and no one use corner one.

by right after self check-in at website or app, at "My booking" there can download boarding pass for printing purpose.
at the app, can select and download boarding pass as pdf at My Booking there too.

i did encounter similar situation as well, where by after web check in, i want to download or find the boarding pass, but cannot find.
when check at counter, they told me if self check-in then just print at kiosk, you can request to print at counter but need to pay a fee for that.

because of this experience, since that, if no check-in luggage, for domestic flight, i just web-check in then print boarding pass at airport using kiosk.