How to install wine32 on ubuntu 18.04 64bit?

I installed wine yesterday in Lubuntu 18.04(based on Ubuntu).

You simple need to go to the synaptic package manager, and search the package named wine-stable(actually i have the 3.0.1 version).

You only need to install that package, and the dependencies will install with it.

After you have done that, you should open a terminal console, and type "winecfg"

Then you have Wine installed on you Ubuntu. If you now want to install something(an .exe for example) you should use the cd command in the console and go to the folder containing the exe. Then you should type on the console: " wine installer.exe" where installer.exe is the name of the file that you want to install.

It is unclear why you can't install wine32 package. But for sure let's (re)-add all necessary repositories

sudo add-apt-repository main
sudo add-apt-repository universe
sudo add-apt-repository multiverse

update package cache and upgrade all packages to 18.04.1 LTS

sudo apt-get update
sudo apt-get dist-upgrade

and then install wine32 package

sudo apt-get install wine32