Plug is from an old laptop to charge it. The left in the picture, not the right one.
https://www.amazon.de/...07FPH93JB/
There's certainly a suitable one
Thanks, but that's a bit too expensive for me. Would actually know what exactly that is
There's a hollow connector. There are different sizes, as a caliper helps in determining the right one.
20 euro is too expensive for you? Phew
So - what you show us is a jack - in which the plug is plugged in by the appropriate power supply.
You are probably looking now not only for the plug but for a power supply.
Look at the sign which sticks to the bottom of the laptop - there should be what voltage and how much power your Lappy needs.
Is mostly 19V and ~ 4-5A - the voltage (V) must be exactly the same - the current (A) must be at least as high as there's - but may be more.
With the data, you can then look for a cheap power supply on ebay or elsewhere.