The only thing I could find you were doing wrong when you were taking the tire off using the tyre lever you don't use the pointy end you use the end with the bend on it you use the pointy end for putting the tire back on especially if you have very low profile tyres I only know this because I did tyre fitting for 20 years as for the cover protector I usually find that they are good to leave on because you do occasionally get that the machine may try to cut the bead but being a new machine it would have to take a while for the duck head to wear but when using that higher lever if you were putting a tube in it you would never use the pointy end to put the tire back on because the chances of you pinching the tube are very likely
My older brother has a similar tire machine easy to use he likes a lot maby a little too much 😅very straight forward and informative video tho
The only thing I could find you were doing wrong when you were taking the tire off using the tyre lever you don't use the pointy end you use the end with the bend on it you use the pointy end for putting the tire back on especially if you have very low profile tyres I only know this because I did tyre fitting for 20 years as for the cover protector I usually find that they are good to leave on because you do occasionally get that the machine may try to cut the bead but being a new machine it would have to take a while for the duck head to wear but when using that higher lever if you were putting a tube in it you would never use the pointy end to put the tire back on because the chances of you pinching the tube are very likely