Need to beef up my lineup asap

I’m currently 2-3 and have a team full of good players but i feel like i need to make a trade to get a high end player. Currently im streaming qbs, my rbs are: conner, carson, melvin, sony, miles sanders. My wrs are: d adams, gallup, josh gordon, tyrell, john brown. Im good w the rest, ertz, ne dst, zuerlein. I feel like i have alot of really good pieces but need to turn this around asap. Any advice is much appreciated