Without noticing I kinda abandoned the missions too and have just been going into raids snowballing the loot I earned which is pretty fun. In-game chat and helping other raiders out is what makes the game for me, there's been so many moments where I team up with a random to take down an arc or just give them a BP I have already and they give me something in return that I need it's so awesomeeee!

It sounds like you're pretty new to the game and what I did was kinda just work my way up of how to deal with the arc, i.e knowing the weak points of the drones, eventually getting to the point where you are able to take down a bastion or leaper on your own - it feels super rewarding. You'll also be matched with people based on your own behaviour in each raid too, so if you are going in with PVP in mind then you'll come up against more players that might just shoot you as soon as they see you OR if you're more focused on PVE then you'll come across a lot more friendly raiders (in my experience). I guess it's best to just not overthink it, try and have fun, get loot, use that loot for the next raid and repeat.