"An idiot and his money is soon parted."
There is a reason for this saying. Some of the advice you have received here is solid. Some is not.
Start with one house, go through the process of finding, buying, renovating, managing and learn. You will make many mistakes, and pay the price but you will, hopefully, not repeat them on the second one and so on.
Buying out of town is a terrible idea to start, you have not the experience and guess what, all "your" people will want to make money, gee, and they will see you as an income source that is not there to watch, you know, a bank.
Buying 3 or 4 houses a year to get to your goal is great if you have the cash reserves and experience to renovate and manage, otherwise your first trashing of a property, bad rental period, and they happen, will end your adventure and add some time to your planned work life.
Be cautious. Start very small and very cautious and pay your dues. You will pay for your errors and this should be expected.
But don't add leverage to you list of early errors. Leverage has its uses but not during a learning phase.
Would you buy stocks on margin when you are just beginning to invest? Don't do it here either.
That said, this is a great time to find good units to add to your retirement or for flips sometime in the future.
A good time to begin, as your mistakes can be covered by the expected valuation increases to come.
But no-one knows when the increase will come and further decreases in value and rents certainly appear more likely in the short term.
There is no get rich quick path, and anyone who tells you there is is full of it.
It is work.