Debian operating system

I know it's not directly Debian, but...

I'm currently running a Zorin 17 x86_64 vm (in virtualbox, windows 11 host), which uses wayland.
In it i have a Debian 9 stretch aarch64 chroot, which comes with X.

I'd like to test the GUI app i compiled in that chroot, how is that feasible?

For reference, this is how i setup initially:

$ sudo apt install debootstrap qemu-user-static
$ sudo mkdir -p /opt/deb9/sysroot && sudo chown -R myuser:myuser /opt/deb9
$ sudo /usr/sbin/debootstrap --arch=arm64 --foreign --variant=minbase stretch /opt/deb9/sysroot http://archive.debian.org/debian-archive/debian/
$ sudo cp /usr/bin/qemu-aarch64-static /opt/deb9/sysroot/usr/bin/
$ sudo chroot /opt/deb9/sysroot qemu-aarch64-static /bin/bash
	# /debootstrap/debootstrap --second-stage
	# echo 'APT::Install-Recommends "0";' >> /etc/apt/apt.conf.d/99noExtras
	# echo 'APT::Install-Suggests "0";'   >> /etc/apt/apt.conf.d/99noExtras
	# echo 'deb http://archive.debian.org/debian-archive/debian/ stretch main contrib'      > /etc/apt/sources.list
	# echo 'deb-src http://archive.debian.org/debian-archive/debian/ stretch main contrib' >> /etc/apt/sources.list
	# uname -nm | sed -e 's/ /-/' > /etc/debian_chroot
	# apt update
	# apt install -y g++ make cmake automake autoconf libtool git vim pax-utils tree
	# adduser myuser
	$ su myuser
		> do stuff

Network isn't really configured so any git push or similar is done outside the chroot.