Hello Doctor, The Cardiologist Interventionist Say That I Need Again

hello doctor,
the cardiologist interventionist say that i need again a stent in the RCA,he looks the cd from 2016 and can see that narrowing was 50%!! and in 2016 the other one doctor says 65% narrowed and after this on statines,i say to him that i cannot support statines too much sides effects and pain in the muscle and i told him that the heart also is a strong muscle he says me it is not a muscle,what i learn in the college is no good then,i cannot trust this doctor.
I am 71 years old,in november 2016 i 've received a stent LAD 80% narrowed and the RCA was 65% narrowed and the doctor say to me we will try with life style change and i did it.I am on plavix 75mg since november 2017 after 12 months DAPT,brillinta and one aspirin 81 mg with a lot of bleeding.Now in the last weeks i receive ectopics beats you can see on the conclusions from the holter,and also stress test and echo,my sugar is 74,HDL 44,LDL 130,tryglicerides 79 not so bad may be LDL need go to 70 i think.
My question is is it necessary to make again angiogram + stenting(very invasiv operation) or MRI is it save with my stent,or CCTA with naturally 15 Smv radiation to check my arteries,
What is the best for me before beginning because i don't trust this doctor at 100%,his answer about the heart that this is not a muscle is very strange for a cardiologist.I send you in extension PDF the tests.I receive from an other cardiologist "dilatrend 6.25 mg and i need take 1/4 tablet in the morning and the ectopic beats are finished now.
Thank you for your answer