Platform to exchange data?

So when I transfer a picture from my laptop to my PC, for example, I always use WhatsApp chat, where I then send the picture in, log on to WhatsApp on the PC or laptop and then download it, but find this impractical

Are there any other platforms where you can easily transfer from one computer to the other very quickly?
(AND YES THERE's ALSO ONEDRIVE OR EMAIL ETC BUT THERE I FIND THE WHATSAPP METHOD EVEN BETTER)

A cloud solution that you can access from any device. You can also save the files recorded by the mobile phone directly there.

Dropbox e.g.

Or the good old USB cable solution for transferring to the PC.

If Dropbox is right, I could really try it out, thank you!

If both devices are in the same network, it goes over that.

That's like onedrive lol.

What is wrong with Onedrive / Dropbox for you?

It couldn't be more comfortable.

Simply put the file in one of the folders and then wait for the synchronization. Usually only takes a few seconds.

You don't have to do more.

Yes, I want something that runs quickly and easily, I haven't had any good experience with OneDrive, I've never used DropBox

I just don't like it personally, I've never tried Dropbox

Dropbox and Onedrive both work in exactly the same way.

If I want to transfer pictures from a smartphone (Android) to the PC, I download them from the Google site (Photos) - synchronization with a Google account is essential for this.

For everything else I have a Synology NAS - I can access my data from anywhere in the world.