Thanks for the kind response! You can do this!
Progress in the game starts with getting your starter to 60. That means a lot of campaign farming at the beginning while you rank up uncommons to the point you have 5 5 star uncommons to feed to a level 50 Kael/Athel/Elhain. It is A LOT of redoing the same level over and over. But you having a 60 Elhain will change your experience with the game, everything gets easier.
And once you have one, you focus on doing the same with an AoE Dec Def champ like Aleks, or one you happen to pull. Then you do it again with something else you need, like Speed with High Khaturn or Apothecary.
All of this leads to a team of 5 60s farming Dragon 20 and Spider 13 or above. This will drop the gear necessary to progress in Clan Boss to the point where you are top chesting Normal, then Hard, then Brutal and finally Nightmare. Those top chests drop shards, and on NM, Sacreds. Hard and above can drop Voids.
As a F2P myself, almost all of my progression came from focusing on a well rounded team of well equipped 60s, and using gear from the Forge and Dragon to progress to top chest NM and hitting UNM. Shards from there let me build my current 1 key UNM team.
So it is a long road, but the path is there. Lots of us went down it ourselves a while ago. Good luck!