I agree with this - I genuinely think that the putting equipment doesn't make a blind bit of difference unless you're close to or playing off scratch. Yes the face inserts may be a challenge, bit overall I don't think it matters as much as people think. Putting practice and working on pace control will make much more of an impact.Putting lesson first before changing?
Try changing grip? Claw? Cack handed?
Heads up putting? - https://www.pga.info/discover/latest/news/science-behind-heads-putting/
Few things to consider before switching putters.....
For example, a mate of mine went from a TM Spider to a TM Z-Torque putter, with the claim that it's "game changing" - spoiler, it wasn't. He's now working on his putting more - realising that he won't improve without practice. The justification for him is that he's spent all this money on a putter, so he needs to actually practice with it so he can improve. Perhaps doing it the wrong way around, but if it works for him...!

On the other hand did roll in some nice putts including one up the hill on 6th from 20ft for birdie 



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