Transferring everything between android phones?

[Android Central Question]

I want to transfer everything from my old Samsung S5, that means messages, contacts, media, apps...everything, to the S8 that I just got.

I downloaded SmartSwitch and a couple of other programs like Coolmuster, Wondershare.. but its only the trial and allows only a few files to be transferred for free. Seeing as I change my phone every 3-4 years, instead of buying the program are there any free programs that will transfer everything from the old android to the new android?

As you can tell, I am a novice at these things.

Thanks in advance for your answers.