If you’ve had Covid twice then you’ll have had the antibodies in your system, however there were several strains and getting boosters to maximise resistance was important.

Remember that you caught Covid twice, because your body’s immune system was still not strong enough to make you asymptomatic the second time. You likely caught Covid several times but several of those times you were asymptomatic.

It’s incorrect to say that catching the virus gives you “better” protection than a vaccine. The vaccine teaches your immune system how to react to the virus without the damage and long-term effects caused by actually having the virus. This makes future infections much less severe and you are less likely to spread the virus to others when you catch it.

Worth restating because of all the misinformation out there: a vaccine will not prevent you from catching a virus, it cannot do that. It trains your immune system to fight the virus so that when you catch it your immune system can fight it immediately and symptoms are much less severe (ideally asymptomatic, but that is not guaranteed), so that you have less chance of passing it on.