Hello, I'm not answering your question, but I would like to encourage you to learn how to sharpen the chain. This is simply part of owning a chainsaw. Replacing the chain every time it is dull is like replacing a bicycle inner tube every time it runs out of air.
It is not very complicated if you know what to look for. Often 1 - 2 file strokes per cutting edge are enough. I'm sure there are lots of videos on Youtube.
Files are also available here at Galaxus (file diameter must fit the chain!).
Kind regards

Makita saw chain 40 cm 1.1 mm 3/8 inch K19 958291656 can be bought Amazon .de .Galaxus could not help me,Too bad ,they sell the chain saw but there are no spare parts.

Hello Alice,I haven't found a new chain from Makita either,but a specialist shop for agricultural products measured the original chain and got me a STIHL chain.product designation:3610 000 0056 / 61 PMM3 56
The specialist shops often offer a grinding service.