Struggling student Seeking accommodation at affordable price

Seeking accommodation ( a room preferably with an en-suite fine without if necessary) , ideally sharing either with women or combined with couples. My budget is lower due to being a struggling student. Max I can go is 500 euro per month. I don’t mind living outside of Dublin in a town centre area. (Close to train or bus services ) Due to financial circumstances , I may have to have HAP or rent allowance. This pandemic is badly effecting me.