Play for fun and seek to enjoy your games, just for the sake of playing and learning. Don’t worry much about your rank. That is bound to fluctuate as it is just a number that’s not too accurate nor very meaningful.
Some players might play a lot of games and still not rank very high, while others pick up the game much quicker. Again, it’s not about the number next to your name, but rather that you’re having fun playing. I feel that it’s better to learn something from a stronger opponent that shows me my mistakes rather than just trying to make a rating number increase.
It’s kind of like running, where one can always win races by finding slower opponents, but what’s more meaningful is finding faster opponents that challenge one to actually improve, and perhaps what’s even more important is simply the enjoyment and fulfillment inherent to the exercise itself.
I’ve been playing for a while now, and still not very good, but I think this meme sums up how I feel about the game.