I dropped out of the top 20 because I prioritized fleet over getting Revan, and it has been a blessing. It was nerve-wrecking to fight the same evently matched squads day after day knowing that I could only beat them with good RNG and couldn't afford to make a single mistake, only to be sniped from rank 10 or sometimes even 5 by someone who had the same payout and wasn't part of my (very relaxed and leader-less) shard chat. It only got worse after Revan, when a bunch of players with badly geared Jedi teams who had never been in the top 20 before suddenly moved up the food chain thanks to their newly acquired Jedus Knighst.
When I simply accepted my loss of status, the game became incredibly relaxing. I know that I can beat most teams in the 21-50 range without sweating and cursing, and I can climb any time I want without stepping on anyone's toes. Why should I ruin my nerves for an additional 50-150 crystals? I get 375 crystals from fleet every day without breaking a sweat, and 650 squad tokens is enough to farm the squad arena store. I can even skip a day now without having to worry about my arena rank. It doesn't matter if I find myself on rank 30 or 45 the next day. It's all the same payout.
My point is, there is no need to lose sleep over a game. I know it's quite an adjustment and feels harsh at first when you're used to a much better payout, but your quality of life will improve a ton if you settle for a reward tier that is less toxic and contested.