I think my feet are too small to find the match in men (6 1/2 in women).
One pair and you better than another knowing that I slip on the toes?
Hopk, I think something is being lost in the Google translation. What do you mean by 'slip on the toes'? I noticed something similar in your original post but thought you meant the shoe was torn when you said 'losing the toes'.
Are you saying that your non-sliding foot sole is the same as your sliding foot sole and is too slippery (not rubber)? Like rental shoes?
In your original post 'The sole of my current pair takes off ....' I thought first meant interchangeable soles but now suspect you mean that you are losing traction. If so, you need to get a dedicated pair of RH or LH shoes, not a generic pair that can be used by either RH or LH bowlers. A dedicated pair will have only one sliding sole/foot and the other will be rubber for traction or gripping the approach.
I have noticed that some of the cheaper bowling shoes will be of the generic variety so you may have to get a good pair of mid-priced shoes or the upper level with interchangeable soles.
If I am mis-understanding your post, just ignore this. Not sure how it will Google back to you. : )