Solver cannot converge

It is hard to give any specific guidance without having the mesh etc.
In general, try first to switch to a small strain formulation (just changing the potential energy) to see if results make sense in terms of bcs and loading
Then go back to the finite strain setting and start with small load steps. In general a correct Newton method should either not converge if you are too far away from the solution or converge in less than 10 iterations