A state does not increase its capacity to repay debt by reducing its revenues and shrinking its economy; which is what Austerity measures cause. You do not prioritize debt repayment over stimulation of economic growth, because growth is the only way you can ever repay your debts. This is not complex to understand. Invest in your people, reduce their poverty, employ them. If you deprive them through Austerity measures, you cripple your own economy, and in fact, your debt will increase exponentially.