What the difference between un and une NEED HELP ASAP

Ineed some with french.i wrote a text describing my favorite dinner, provided will be the text below, can someone check over the french version of the text t see if it's grammatically correct or just merely correct. i am new to french; hence, i am having a hard time.the english text: my perfect dinner would have salads, a lot of desserts, et lemonade. i would choose a green salad and soup for my entree. for my main dish, i would choose a sandwich. i would finish with a lot of desserts like a bowl of ice cream and some cake. i would have lemonade to drink.the french text: mon diner parfait aurait des salades, beaucoup de desserts et de la limonade. je choisirais une salade verte et une soupe pour mon entrée. pour mon plat principal, je choisirais un sandwich. je finirais avec beaucoup de desserts comme une boule de glace et du gâteau. j'aurais de la limonade à boire.

Do we say "jouer aux jeux videos" or "jouer a des jeux video"

Creme glacee what does that means in english