How do I manually change the mobile network on phone?

Short description about my phone, I am using a Samsung phone [Galaxy A30], a galaxy A series mobile with an android version 10.

To Change the network manually, follow the below steps:

1. Go to Settings on your mobile and find Connections.

2. Choose Mobile Networks

3. In Mobile Networks, choose YOUR PREFERED NETWORK (Network that is to be changed i.e SIM1/ SIM2)

4. You can select any one of the listed options to shift from your current Network.

These screenshots are taken from a Samsung mobile and all rights of features and designs are reserved with the respective company developers. Thank You.