You either ARE or you ARE NOT immune to a given virus. There is no middle ground; the question is binary.
If you are immune then no amount of PPE is required. I will, right now, sporting natural immunity, walk into a Covid-19 ICU without any PPE on and sit there and observe for 30 minutes. I will do without fear because I am presumptively immune from the virus as a result of previous exposure, infection and recovery.
Anyone who believes the vaccines work is welcome to come with me on the same terms: 30 minutes in the ICU, no PPE.
If you believe you are immune due to vaccination then you should be perfectly willing to do this without a shred of fear that you will, in fact, get Covid-19. You're immune, or so you were told. That's the point of vaccination; you make you impervious to a given disease. Yes, in some very tiny percentage of persons, nearly every time as a result of being immune-compromised, the vaccination fails to elicit an immune response. But -- assuming you are not immune compromised then there is absolutely no reason on God's Green Earth for you to fear the virus if you have taken the jabs and the appropriate 2 weeks has passed since the second one.
If you do not believe this to be true then you wasted your time and worse, took the risk of severe adverse effects from the jab for no purpose. You gained nothing either physically or mentally from said jabs. You have no faith in your course of action.