Boosting credit?

Zerenity • 30. 🌵 Arizona Living
Okay, here's the stuarion. 
My credit just wine down (2pts) due to a hard credit inquiry. My score is a 569 now, and my experian score is a 551, I do have some small debts to pay which will help with this. 
Will opening a secured card boost my credit showing I make on time payments? I'm just sick of looking at my score and feeling disappointed in myself. 
Anything helps.(: