Can we still use Windows 10 after support ends ? (2025)

Are security updates really needed ? Will Windows 10 be safe to use ? Can we still install Windows 10 on a new hard drive or SSD on a used computer PC or laptop ? My tips for save computer and internet browsing.
Owner manual https://data2.manualslib.com/pdf5/105/10492/1049140-tecsun/pl300wt.pdf?3947beaa25f208e8850c47d0f0d547a7