Complex sentence: During the reopening of the Freddy Fazbear pizzeria children violently destroyed Mangle, After that Mangle is used as a toy which children could break apart and put it back together.
Split into simpler sentences: During the reopening of the Freddy Fazbear, the children in the pizzeria violently destroyed Mangle. Now Mangle is used as a toy which children can break apart and put back together.