Is it possible to transfer data from a mobile phone to a USB stick without a PC?

I have a USB stick for my PC and laptop for secret data such as PINs and passwords, which I will never leave on my computer because of the hackers on the Internet.

I would like to use the same stick for the same important data on the mobile phone, so I would like to ask whether I can send data to the stick with the USB cable of the charger (USB plug on the mains power plug / transformer) via the corresponding app.

I have the impression that the mobile phone charging cable can perform the same function because I can also use the same cable to get data from the mobile phone to the PC.

With the right app, this could also go in another direction.

There are USB adapters that you plug into the phone's charging port, so you can attach the stick to it and transfer data. Google after that, they are not expensive.

You should never save passwords in clear text, but encrypt them if possible. It doesn't matter whether the data is on the cell phone or the computer. There are USB sticks that have a Lightning connector on the other. You can buy something like that very cheaply in China.

You usually can't use a charging cable to transfer data from a USB stick to a smartphone.

You will need an OTG cable for this. Important data should not only be saved on a USB stick, but also encrypted in a cloud.

Clouds are offered a lot, but I don't trust the companies. I'll look for OTG cables right away.

, so you should encrypt it in such a way that they don't get a turn.

Of course, you shouldn't save the data only on a USB stick, depending on the brand and series, it can break or be destroyed in some other way.

The attempt with OTG cables: there are thousands of them, but not what I mean. I'll try to explain it in more detail:

The OTG all have - one end is the smallest plug suitable for all cell phones - ok - but the other end is a USB "plug!" like stick (i.e. Stick to stick) that doesn't work, I need a "USB socket" for stick; is unfortunately not recognizable from the advertisers' advertisements. All converters are intended for computer types (sockets!) On desktops, laptops… Yes, there are different small power plugs for the most varied of cell phones, the latest USB-3 or C mostly all fit well, only there's apparently no socket at the end of the cable.