We will be using ssh secure shell for this
sudo apt-get install openssh-server
Step 2: enable and start ssh
sudo systemctl enable ssh
Step 3: get the ip address of your linux system and note it
ip a
Step 4: install ssh on termux or use this app
pkg install openssh
(Application recommended)
Step 5: connect to your system
On termux
"ssh Desktop_Ip:22"
On app
Click on the menu on upper right corner, click on SSH settings, type your ip then connect
Step 6: enter your username and then password
DONE!!