MacBook Pro randomly stops working/shuts down

I don't disagree with @Ryanber201's post.

The 2013 MBP is well obsolete. You could spend resources - time and money - fixing it, but the computer wants to retire. Today the problem is that it shuts down randomly. Tomorrow you'll discover that the software support has dried up. In fact, Apple stopped supporting macOS Catalina a few years ago, and many other publishers have stopped supporting that OS with their browsers, office applications, device drivers and other apps and software.

To me, the shutdowns seem indicative of a hardware issue. Apple and their Authorized Service Providers won't service the laptop because new parts are no longer available for an obsolete computer.

You would be wise to do your research and find a replacement for this old Mac. Look for something that is no older than four or five years. It isn't difficult to get ten years of good service from a Mac.

As frustrating as it may sound, I advise for you to buy a new MacBook.

Here are some tips that may make this shift an inexpensive one.

• You don’t need the most expensive nor the newest one. If you are able to utilize a 2013, 11 year old computer for your daily task load, then all you need is a functional computer in today’s day and age.
• Buy in advance and make it worth your money after its use. When upgrading (for me usually every 4 years) I like to think about what I could have bough through the years. For instance if I bought a 1,000 dollar computer for 4 years, the newest computer (not really), that means I could have bough 4 computers for 250$ each. 250$ computers, or at least non-apple computers, do not function enjoyably, you don’t get that same feel that it was made with care. I say not really because after trade in, discounts, and etc, its really not that expensive.
• Treat yourself! A computer is essential to most things nowadays, and you shouldn’t have the experience you are currently having.

I hope all of this helps. I recommend for you to upgrade to the 2020, m1 MacBook Air, as it should last a very long time from here on out. For 500ish dollars with current sales, it seems to be very worth it. Act fast though, and don’t fall for marketing scams!!