I get suicide thoughts every day, and I also then have nightmares when I sleep, was wounding if anyone else is similar, and what they did to try and deal with the intrusive thoughts?

Rumination is the compulsion. Its the "why am I having thoughts about suicide all the time? Does this mean I want to kill myself? How can I be sure I dont want to kill myself?" On and on and on. The obsession is around suicide. So do exposure around the obsession not the rumination. If you afraid if knives and you threw all the knives in your house out go somewhere you could buy a knife. Maybe buy a knife when your ready. Cut vegetables with the knife etc. If your compulsions are all mental then induce the scary thought. Maybe read about suicide so it triggers your anxiety. Then try and sit with it. Note dont turn reading about suicide into a compulsion where you are reading about it to try and "figure it out". Ocd can be sneaky like that.

Same:( Thy are def intrusive for me, but at the same time, my level of agreement/anxiety with them changes. Like sometimes it’ll pop up and I’m really depressed that day and I think “not going to do it, but that sounds peaceful,” whereas other times I am fed up/upset with the thought and don’t understand why I’m thinking about it.

Yes fears about whether I want to ir should kill myself have been major ocd theme for me for a long time. I will have vivid instrusive thoughts about cutting or shooting myself. The reality is I dont want to kill myself. If you do please seek help for that. If its an ocd fear the best thing to do is accept the thoughts and try to be okay with them. They will lessen over time as you train yourself to do this. Ill sometimes say to myself "maybe I do want to kill myself maybe I dont, so what". The trick is to feel your anxiety and not give into the compulsion. For me the compulsion is either rumination or putting myself in situation where I could kill myself to see if I really want to or not. I once went so far as to walk on a bridge and look down into the water to see if I wanted to live or not (do not do this!!).

Wait .... how do you do exposure for rumination?

Yes I get these as well