How to install android SDK versions automatically on WSL1 with Ubuntu 20.04?

I am starting to use (and learn) WSL with Ubuntu 20.04, since I work with node and cordova apps I am trying to create a shell script that installs everything I need if (when) I break everything and I have to start from scratch.

I am installing the android skd using

sudo apt --assume-yes install android-sdk 

and I add it to the PATH

PATH="$JAVA_HOME/bin:$ANDROID_HOME/tools:$ANDROID_HOME/tools/bin:$ANDROID_HOME/platform-tools:$PATH

Everything works great until there, now I need to install the android sdk versions, that the android developer site says to do using the sdkmanager inside $ANDROID_HOME/platform-tools but it is not there and I do not find any related package with it.

platform-tools content:

drwxr-xr-x 1 root root    512 Jun 30 11:08 ./drwxr-xr-x 1 root root    512 Jun 30 11:08 ../-rwxr-xr-x 1 root root 198984 Feb  8 11:55 adb*-rwxr-xr-x 1 root root  51312 Dec 13  2018 dmtracedump*-rwxr-xr-x 1 root root  22680 Mar 22 16:33 etc1tool*-rwxr-xr-x 1 root root 134160 Feb  8 11:55 fastboot*-rwxr-xr-x 1 root root  14328 Oct 24  2018 hprof-conv*lrwxrwxrwx 1 root root     15 Aug 29  2019 make_f2fs -> /sbin/mkfs.f2fs*lrwxrwxrwx 1 root root     12 Aug 29  2019 mke2fs -> /sbin/mke2fs*lrwxrwxrwx 1 root root     16 Aug 29  2019 mke2fs.conf -> /etc/mke2fs.conf-rw-r--r-- 1 root root    923 Jun 27  2019 package.xmllrwxrwxrwx 1 root root     16 Aug 29  2019 sload_f2fs -> /sbin/sload.f2fs*-rw-r--r-- 1 root root      7 Aug 29  2019 source.propertieslrwxrwxrwx 1 root root     20 Aug 29  2019 sqlite3 -> ../../../bin/sqlite3*

Inside platforms i see that android-23 is there but nothing more.

Does anyone knows how to get the sdkmanager or the sdk versions??

Extra Info:

If I download the android command line tools manually, where to I put it? Should I delete the other things?