how to deal with a mother who makes every conversation about herself?

sorry if this doesn’t belong here, wasn’t sure what other thread to post at. it’s basically as the title says, every conversation I try to have with my mother goes right back to her. I mention how hard work was today, she counters by saying she’s SO EXHAUSTED from her part-time job or yard work. I mention how I need to go workout, she’s suddenly talking about how she exercised today and didn’t do enough and now she’s going to be fat and ugly. pretty much every casual conversation ends up cycling back to her immediately. it’s like she’s competing with me for who’s more tired or who had the harder day? I don’t understand it. I love her, don’t get me wrong, I don’t think it’s malicious or narcissistic, but growing up like that has made it difficult for me to actively participate in conversation in general rather than just listening to the other person. has anyone else experienced this? it makes it hard to talk to her because she ends up just ranting about something about herself. any advice on how to handle it? I’d like to have real conversations with her again.

(not sure if this is important, but I’m the oldest and the only daughter. my dad did pass away a couple of years ago, but she did this prior to his passing as well. she also has a massive “not like other girls/women” complex, so she always has to comment on how she doesn’t understand the point of makeup or how to do it, she doesn’t understand why most women are so bitchy, etc., which makes it harder as well because I love makeup and don’t think “not getting along with most women” is something to be proud of)