No, no, and no.
You should have learned about mRNA in high school biology class. mRNA is an essential component of every living organism and every virus (viruses are not alive). Without mRNA, life is impossible. mRNA is the carrier of instructions coded in the DNA to make the proteins that do all of the work and provide physical structure to the cell.
In the area of vaccine technology and, indeed, in all of molecular biology, all we humans can do is harness for our own use what already exists.
FYI, when you are infected with a virus, it takes over your cells and forces them to make mRNA. If mRNA is so dangerous, then why didn't the abundant virus mRNA spread throughout your body kill you the first time you ever caught a virus?
You are entitled to your version of mRNAs but you are not entitled to your personalized version of the FACTS.
https://publichealth.jhu.edu/2021/the-long-history-of-mrna-vaccines