To move from one country to another first start off by deciding what country you want to move to.
Then after you've decided on and found a country you want to move to then start by getting any documents needed such as a visa and any other documents.
Also secure housing and secure a job if possible or needed and learn the local language which can help.
You should also consider factors like cost of living, job opportunities, culture and personal preferences.
Contact the embassy or consulate of the country that you plan to move to and find out what type of visa you will need such as work visa, student visa, tourist visa, residency visa etc.
If moving to another country you will certainly need the residency visa.
And make sure that your passport is valid and has enough remaining validity for the intended stay.
And estimate any costs of moving, living and settling in and build a budge.