To be fair, one of the reasons given why those lower ranks are not used is because those who did the maths determined that they would not be good predictors of matchups at that level.
For the OP - if you are intersted in improvement rather than solely the fun of the shapes on the board, and apply yourself to it, you will almost certainly start moving up through the TPK ranks and your matchups will become more predictable, as you leave that zone where there are many factors that make it more chaotic.
There are a fantastic range of options to get help, ranging from asking for teaching here in the forum, to all various internet teachers out there. here’s what worked for me, in a thread where others discuss the same.