If i catch covid after being vaccinated, will catching the virus boost my immune system?

Yes. The vaccines available in our country trigger antibodies to the virus spike projection while the natural infection triggers it to the whole virus, spike included. Estimates vary but natural infection provides stimulation a multiple times more than any vaccine.

There is some evidence that the native COVID-19 infection results in IgA increases in nasal and sinus passages, providing a more varied immune array than the vaccine, which would affect focused IgM and IgG levels solely.