A slow laptop doesn't mean you need a new one. In 90% of cases it's solved with a cleaning or a small upgrade.
1. Overheating: dust blocks the fan, the CPU slows down to avoid burning out. Cleaning restores 30-50% performance.
2. Old HDD: switching to an SSD turns a 7-year-old laptop into a new one. Windows boot drops from 3 minutes to 15 seconds.
3. Not enough RAM: adding RAM from 8 to 16GB costs little and changes everything.