Yeah, a stent will do stretch damage to the artery. And then the artery considers the stent to be a damage site, and it begins to plaque over the stent again. Typically in five years or less the stent is again clogged up and then you have a much worse problem.
Same thing applies to a bypass operation. Temporary fix, but the damaged areas will plaque over again.
Before your arteries are completely blocked, intravenous chelation therapy with EDTA will clear out plaques to an amazing degree. I had it done years ago with great results. Finding a doctor to do the procedures is a problem as it is not ‘mainstream’ medical.