why did Andrew Jackson believe that he not John Quincy Adams should have been elected president in 1824

Because it was a given to the house of representatives due to amendment 12

Because he received more electoral votes, but he was not elected president.

Explanation:

The presidential election of 1824 was very controversial, being the only election since the passage of the twelfth amendment that was decided by the House of Representatives. It was also the presidential election in which the candidate who received the most votes did not become president.