I too am on Silvermoon. There are alot of guilds recruiting, trade and general is full of adverts all day but the problem is the server is so jam packed full of people and guilds that finding the correct guild can be a long road.
I am lucky, i am in a great guild right now. If you still enjoy the game and want to play i would suggest you persevere with looking. Unfortunately my current guild, Ice and Fire, are not in need of another healer (i don’t think) but with legion just round the corner then you never know…