Jaypi...it looks to me like you're having an anovulatory cycle. There isnt a clear temp shift at all. If you look at your chart between cd 13 & 29, all of your temps seem to be on the same level. *if* you did indeed ovulate, then this is clearly a hormonal issue and the low temps suggest low progesterone.
Lkg, your chart appears perfectly fine to me, its quite common to have lots of dips and rises. Good luck 🍀 xx