So I mainly play ultramarines (dabble in craftworlds) but with the new SM codex I wanted to get back into my boys in blue, experimented with a list and the new relics etc. Recently played a game against a local blood angles player and really had a rough time. It was a boring game for me because it turned into a turn one being charged by the Black company rage guys while his Phobos units sat on objectives. I couldn't even get up the board to play the game because I had half an army of melee fighters in my grill. Being bogged down and bottled up is a weakness of Ultramarines, I've known that fact for a while but it seems no matter what list I build and experiment with it always happens.
I believe a big issue I'm having is proper deployment tactics and screening. What is a good way to setup a nice ultramarines shooting army. Some key models I include are Guilliman, primaris librarian, techmarine, Replusor, Aggresors, Primaris ancient and hellblasters.
In my most recent game I tried a 10 man team of intercessors and two squads of tacticals, I've changed that to two intercessor squads and a single Tactical squad because the 10 man got chewed up turn one.
What are some good rule of thumbs to consider for deployment and placement? Thanks all for the tips!