Step-1:
Requirement : processor core 1-3
Ram:4gb
Step-2:
Try to work without sample data
Step-3
In admin panel Store-> configuration->advance->developer-> javascript-> Merger javascript ->yes
Enable javascript building -> yes
Minify javascript -> yes
Merger css ->yes
Minify css -> yes
Step-4
Run the following command
php bin/magento setup:upgrade
php bin/magento setup:static-content:deploy –f or only deploy
php bin/magento cache:flush
Step-5
If admin panel loading time take more than 1 minute the press ctr+f5
