There is peer reviewed research which rules out the assertion that Covid caused the heart problems. It’s been posted to FR, but I don’t have the link.
Will help you out a bit.
Here is a study that shows the myocarditis from the jibby jab is different and unique from Covid.
This from an autopsy.
https://www.mdpi.com/2076-393X/10/10/1651
The bottom line is there is no nucleocapsid protein only spike protein in the affected tissue. This is shown in the heart as well as the brain. The Jab has a unique signature. This is from a tissue sample post Mortem.
The nucleocapsid comes from the body of the virus. No nucleocapsid protein in the sample on autopsy then its not from the virus.
Here is a visual explanation
https://www.youtube.com/watch?v=NZhzWzoPB3M&t=629s
Now ask your self. Why are autopsies discouraged? I think you know the answer.