Restart the laptop regularly
Close unused apps and browser tabs
Disable unnecessary startup programs
Uninstall unused software
Update the operating system
Update device drivers
Run a malware scan
Free up disk space
Delete temporary files
Use an SSD instead of an HDD
Add more RAM if possible
Reduce visual effects and animations
Keep the laptop cool and dust-free
Check for background processes using high CPU or memory
Use a lightweight browser
Keep the battery and power settings on high performance when needed
Defragment only if using an HDD
Reset or reinstall the operating system if performance is still poor