Is there a solution how I can play a game on my PC even though I don't have enough memory?

Is there a solution that I can play arma 3 on my laptop even though I don't have enough storage space without buying an external hard drive?

Cloud storage such as Mega

Clear the memory.

As @DerAllesHelfer said: move documents to a cloud and install the game.

First, you can free up a few GB. For this the https://www.netzwelt.de/...hnell.html

You can compress your operating system. Here to the https://www.turn-on.de/tech/ratgeber/windows-10-komprimieren-so-laesst-sich-speicherplatz-sparen-155721

You can move your data to a cloud, e.g. Store photos in Google Drive.
You can also compress data using a program such as http://7zip.org.
You can delete old savegames and keep in mind that you have to deactivate Steam Cloud, otherwise the data will be automatically uploaded again.
Delete a few unnecessary games / apps (is already on the first line)

But keep in mind that you delete data here that may also be missing. An additional HDD for games makes perfect sense. For a good deal with hard drives, keep the 20 euro per TB in mind. 4TB = 80 euro

Example HDD

https://geizhals.de/...ml?hloc=de