Ok can I use windows 10 that lasts until 2029 or wait for the end of the windows 10 supports that lasts until 2025 in the first part
You can use it, until some date in the (relatively) far future.
You probably won't be using the same hardware in 2025 or 2029. Microsoft may or may not continue 'updating' Windows 10. Or it may be called something different. Or it may be just called "Windows", with no particular number after it.