First, you need to establish your baseline lifestyle habits; how many date nights per month do you go on? What do you pay for your rent, groceries & other expenses?
Now, you will review & update the price for each expense category to establish your average monthly expenses. We will prepopulate your data based on your hometown, and you only need to modify based on inflation, etc.
Once you have saved a list of cities that you have expressed interest in living in, you will be able to compare your project cost of living abroad, compared with your hometown expenses.
Enter your savings, investment amounts, crypto holdings, etc. to see when your project retirement date will be based on the 4% principle established by the 'Financially Independent Retire Early' community. Adjust metrics as you please.