How do I play Minecraft with friends without being connected to the same wifi network?

You either have to go out and rent a server, which is easily done, if you have cash. It's honestly a simple search on google.

Otherwise, you could join a public server, but then your options are fairly limited to their array of games.

You could also take the "host yourself route", which is described at this page: How can I host my own Minecraft server?

Good Luck!

The easiest solution would be to find a server that supports how you play and then both of you can log into that server. (Multiplayer) This solution is free and you don't have to set anything up. The only thing is it won't be just you and your friend. Some servers allow griefing so your builds could get destroyed. This is where researching for a server that it isn't allowed if that is what you want.

To research, there are minecraft server list websites that organize them in categories. A quick search brought up several. A few: here, here, and here.

If you want to play a private game together and you are willing to pay for it, realms would be the easiest solution.

If you don't want to pay monthly, you could set up your own server. This would require some research but it is fairly simple.

If you have fast internet speeds, you could set up a server on a home computer. If you like this idea, make sure to set it up as a whitelist server so that only the two of you can log in. Never open a home server to the public.

If you don't have fast internet speeds or don't want the server at home there are several companies that you can pay monthly to host a server on their computer. This one even has a free option. You will still have to research setting up a server with this option as most of them don't set them up for you.

use aternos.org to make a free server, you can also mod on their servers it's pretty sick to be honest, I use it to play with my friends.