https://www.the100.io/ The100 will place you into a clan (you can be a member of up to 3) with people of similar age and mindset (casual, etc). People in the clan post activities with a sign-up roster. just sign up an go. really a much better option than lfg if you don't mind scheduling your activities in advance. Engram farming from Vanguard strikes and Nightfall gear should yield enough infusion material get your light level up in no time!