I'm a destiny player since beta. I have played all the raids and lairs and I agree with you. It is getting harder to get started raiding. When a new raid comes out I don't like to burn through content just to get raid ready. I get left behind and it has been getting harder with each raid to get into one fresh. I have 6 completions of last wish and every one involved someone new. Just keep trying. You will find a group out there eventually. Make sure your as close to 600 as possible and that your weapons and armor are optimized with mods and good rolls. Find different lfg sources.