Retirement provision and loan repayment

Hello, I'm looking for advice on how my wife and I can achieve our financial goals. I hope to get some ideas and opinions in this sub. About our situation. We bought a house a year ago and after a year we are financially settled. Now we look forward. We can make special repayments of 5% per year and have an interest rate of 3.88%. The fixed interest rate is still valid for 9 years. What we have: €2,500 per month after all deductions