It's unfortunate, but it's the reality. The freebie bot wins are mostly gone. All you can do now, is build a team that gets you there organically.

If you want to post your roster, we can try to help build one for you. But the key is going to be gear.

+1 to what Kram said about your roster, and gear. All we can really do is deal with the circumstances as they are now and make improvements to our teams where we can. 

if i had 80 billion silver i could roll up all the gear i have. my team is seeker (my highest turn meter increase, Conellia for sleep, madame serris, skullcrown (my highest speed lead) C.R 100% C Dam 264%. i might be able to get it higher by scrificing speed. the two huge issues i'm having is most people i'm coming across in classic  better speed leads like lyssandra, Kymar, Arbiter. the other huge issue encountering empowered champs, the only one i could empower isn't worth it.

Your team comp is okay, but the part you're leaving out is the most important part of that team - how much speed do you have on Seeker? If it's anything under 330, you basically have no chance with that team.

Do you happen to have either Valkyrie or Yoshi? They can both allow you to make up for a lack of speed on your primary booster. If you have neither, you should strongly consider going with a different type of team, because you won't get far with a slow speed booster.

Yes, please post your team and builds and we can see if we can help with some advice on what to farm, alternative teams, swap-ins against certain comps, etc... :)

Can understand classic Arena frustration - less so GH quests - but Tag Arena quests only show up in the Ramantu missions, so these are pretty unrelated.