Is there any way to use microsoft office in ubuntu without using wine? or any other alternative similar to microsoft office which uses the same format

You can't use Microsoft Office in any way without a license ... It is payware. You need an windows emulator like wine to run Microsoft .exe files on any Linux.

You can use LibreOffice. It reads and writes MS-Office format files. LibreOffice is free software.

Yes. There is a cloud implementation of Microsoft Office.

Simply put, yes, it's possible to use Microsoft Office on a Linux computer, without needing to use a Windows emulator. Microsoft has created a version of Microsoft Office with Cloud integration called Microsoft Office 365, which can be accessed on any device by using a web browser to connect to the web version of the Microsoft Office package.

Of course, this will require you to create a Microsoft Office account and pay Microsoft for the privilege of using their software. Also, the web version of Microsoft Word is not fully compatible with the standalone Microsoft Word software, having quite a few features such as image captions and title pages missing.