Does this imply that a vaccine based on a weakened live virus would be better than the mRNA vaccines? Or is the level of immunity somehow dependent on having a

Does this imply that a vaccine based on a weakened live virus would be better than the mRNA vaccines? Or is the level of immunity somehow dependent on having a full blown infection? As somebody who has been mRNA vaccinated recently, should I seek out a break through infection by the Delta variant now, while my immune response is at its peak? Would that convey longer lasting immunity?