No 5-stars players in tranfers

[Gothika]

in this season I NEVER find 5-stars players to buy in transfers... only and only 4-stars (just few) and 3-stars (many) players. I can check 50 times in a day, but nothing changes!!
So I cannot make my team stronger, and I'm playing a 12th level tournament against 13th level teams (I don't know why).. so it's logic, I'm the last in ranking and I won't pass to 13th level, I won't play next champions league etc....
I opened a ticket to Nordeus support but I received only pre-formatted replies (you have to login and logout several times etc.. etc..)

Someone has valid suggestions? I'm annoying and I think I'll abandone the game soon.
I attach two screenshot as examples

Thanks