How to automatically merge bones with same names

[maxellabdullah]

Hello. I'm a beginner in blender. So I want to ask how to make the bones automatically merge. so here I have a model from mixamo and convert it to a .pmx model. also I have downloaded mmdfakewings18's semi standard bone. Next I want to replace the bones from Mixamo with semi standard bones automatically. I want it to be making it automatically merge the bones that have the same name. like this tutorial, but without using the pmx editor. just use a blender