The Steam Market page for an item is created after someone has offered to sell the item for the first time.
For instance, if you check a game which was recently accepted for the feature of "Steam trading cards", e.g. Clea 2, this is how the page looks for one of its items (:florinehappy:):
There is a chance, but its incredibly low.
I dont know exactly how matchmaking is done in CSGO but there is always a range of ranks in the same game. Usually within 2 major ranks (in valorant, if you are gold you will match sometimes with silvers, sometimes with golds, sometimes against diamonds. More often than not there will be more than one major rank ...