I think the part of your query that struck me was "ALL the negative ones". We have to expect some negatives along the way, but if you are having significantly more negative punts than positives, then I suggest you are doing something wrong. Having a quick look through your reviews, and a couple of common factors seem to appear.
Firstly, having a GFE-type of interaction with the SP seems very important to you. You give negatives if there is no interaction, but also if too chatty or talkative, or just because you didn't "hit it off" with the SP. To many SPs, GFE just means they do some basic kissing. If you expect to "click" with every SP, particularly at the lower end of the market, then I think you are bound to be disappointed. They are offering sex, not friendship.
You also seem to book appointments days in advance. I think you have to accept that some SPs, again particularly at the lower end of the market, are not good at honouring appointments made in advance. I would certainly never travel to see an SP without first getting confirmation that the meet is still going ahead.