Uncle made POA fraudly when I was 16 yr old on his name and sold my la

After death of my mother and father my uncle became my guardian.At that time i was 14 yr old. When i was 15 yr old in 2012 my uncle taken Power of attorney from me to sale my lands , he show my age 22 in that power of attorney fraudly with help of some corrupt official. In 2020 partition of my ancestral property happened, then i came to know i don't have any land. He sold some land and few land register in his son name. Some how i managed to take Xerox of that power of attorney then i came to know in 2012 he taken me registry office to sign that POA. In that POA my age is 22. but my actual age in 2012 was 15 yrs, i have matric certificate, Aadhar, Voters ID etc. Now what should i do