IF I have 1mil cash and based on 5% rule, I would have $50k per yr or $4.1k per month. How would you recommend for me to earn $50k interest per year. I'm open to work at MCD or starbucks as part time.?

Just wanted to say 45 with 1mill cash is great work, I just exit a mentally abusive divorce, with three kids, and I am restarting everything. Literally 0 savings. Don't dare to think about retirement as the thought of it just make me anxious.

You are about 10 years to 55yo where you can tap on the lifelong interests from CPF. You can maximize your CPF contribution now until then. At 55yo, you can do the CPF shielding and see how much you can receive as interest. Any shortfall in interest income, you can obtain from SSB and your part time work. The above suggestion assumes you do not wish to take any risks.