Canon EOS R100 (help pls lol)

Hello! I am not a photographer at all, received this camera as a gift for Christmas. I am a new mom and mostly using the camera to take nice pictures of my baby (monthly pictures, self portraits, some styled shoots). I have limited knowledge in camera/photography lingo. I have become frustrated when taking pictures recently because they are:

1. ⁠coming out blurry
2. ⁠showing excess movement (the most frustrating thing for me)
3. ⁠I can’t seem to get the lighting right

I need to take my sons 6 month pictures this weekend and I so desperately want them to turn out good. I’ve searched for videos and such to help but haven’t found any that help. I’m looking for any advice you have, resources I can try to look at, any different lenses or settings I can try, etc. thanks in advance :)