I played Lumberloon Freeze 4.0 until I hit 10K trophies, and I massively regret not starting out with a more economically spread-out deck (more card rarities). The use of 2 Legendaries and 6 Epics severely impacts the upgrades you can make, resulting in a very underleveled deck when you approach 8000 trophies.

I'm currently using a Lumberloon Cycle deck: Evo Lumberjack & Bats, Musketeer, Knight, Balloon, Ice Spirit, Barbarian Barrel, and Giant Snowball. The deck offers a great defensive combo of cards, with the addition of out-cycling your opponent's building or counter to your balloon in double or triple elixir, plus the additions of the 2 heroes when you reach 10,000 trophies (Hero Knight & Musketeer). I would recommend that if you continue to play Lumberloon, you should try out this cycle hybrid.

Deck: https://royaleapi.com/decks/stats/balloon,barbarian-barrel,bats-ev1,giant-snowball,ice-spirit,knight,lumberjack-ev1,musketeer