Choose a rock type Pokemon with sturdy or good enough defences (I used Carbink, because it's the only rock type besides Lycanroc I like the design of) to set up stealth rock. Idt your team is too slow, so TR might not even be necessary
Edit: Nvm I just read you still get outsped despite your mons having better speed stats apparently. I used two Carbink, one with stealth rock and the other with TR lol So 4 pokemon did all the work for me xD G'luck my fren