this is my second post about it

so i tried talking to my boyfriend, and when i would answer he said i was arguing and talking over him, so i stopped talking whenever there was a pause and i started waiting for him to finish. id start talking, he would interject by denying or commenting on or whatever to what i was saying, and so i would stop again and let him talk because its important for us to talk. it started to not work because it would always end up i never say anything until im livid and yelling at him to stop and let me talk, which i know isnt healthy. so then i reverted to i let him get everything out with saying nothing, he said i was ignoring him. so i tried when he would talk i would say okay, and then he would tell me that my behavior isnt okay and so i cant just say okay, so i tried saying im sorry for everything, like specifics "im sorry i was being mean it wasnt my intention' but now thats not working. how do i actually sit down and have a conversation with him