Hello! Here is my opinion:
I think you should get the saddle properly fitted or maybe even get a new one so you can feel more comfortable to work with your horse. Canter : English Lope : Western -they are both the same gait, just have different names.
Here is how I've been taught to lope:
•Start with a consistent, normal speed of a trot/jog.
-if he tries to do an extended trot, slow him down and start over again.
•Move your outside leg back and give him a kick when you're ready.
-you can also make kissing noises or say "hip."
•Make sure to have a good seat and heels down, when you are good at it with stirrups:try without, it will help you get ready to lope bareback.
Hope I helped! xo
You may even want to try lunging him at a lope/canter. If you have access to a round pen, try getting him to lope/canter in there. As for the galloping when being asked to lope, make sure you slow him down and let him know that was not what you were asking for.
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