Okay I started to play monster legends again after a half year break and i got my lvl 56 account and I was in Legendary IV league. And here the problem starts.
When i stopped playing the Legendary IV league opponets were three lvl 100 legendary monsters just like my team and i did fine fighting them. And now when i fight in Legendary IV there are three lvl 130+ Mythic monsters fighting aganist me. I understand that the standars may changed but thats not the problem. With two days i fell from legendary IV to Gold II and the main cause is this that in the champion league and even the gold my opponents are still lvl 110-130 Mythics. Is this somekind of a glitch or the matchmaking needs to be that unfair.

You cant expect a game stays the same when you decide to take a break.

With some dedication you can also get ranked Cosmics and be competitive again.

There is an issue that at start of new tournament that the pools are pretty big, so you run in to pretty strong opponents but i believe this will be fixed next tournament

But anyway at this point you can't expect to be L4 with only legendary even if they all are r5 (some exceptions)