What can I use instead of 7-zip?

7-Zip is free software with open source. The most of the code is under the GNU LGPL license. Some parts of the code are under the BSD 3-clause License. Also there is unRAR license restriction for some parts of the code.
You can use 7-Zip on any computer, including a computer in a commercial organization. You don't need to register or pay for 7-Zip.

The alternative for 7-Zip in WinRaR which is the rest and best option instead of 7-zip.

WinRAR is a trialware file archiver utility for Windows, developed by Eugene Roshal of win.rar GmbH. It can create and view archives in RAR or ZIP file formats, and unpack numerous archive file formats. To enable the user to test the integrity of archives, WinRAR embeds CRC32 or BLAKE2 checksums for each file in each archive. WinRAR supports creating encrypted, multi-part and self-extracting archives.

WinRAR is a Windows-only program. An Android application called "RAR for Android" is also available. Related programs include the command-line utilities "RAR" and "UNRAR" and versions for macOS, Linux, FreeBSD, Windows CE, and MS-DOS.
What is WinRAR?
With WinRAR, users can compress or archive multiple electronic files into single and significantly smaller size folders. With this tool they will save valuable space on their computer hard rive, USB drive or mobile device and anage their files more efficiently.
Users can also open, extract and manage archived files using WinRAR
WinRAR is more than just a compressor – its many integrated additional
functions enable users to organize and protect their files from damage or unauthorized use.

What can WinRAR be used

⦁ Compress and archive files
⦁ Compress email attachments
⦁ Password-protect files and attachments
⦁ Lock files
⦁ Split files
⦁ Create self-extracting files
⦁ Backup files
⦁ Protect files from damage

Why is WinRAR?

⦁ Safe and stable
⦁ Best compression-to-speed ratio
⦁ Easy to use and user friendly
⦁ Right-mouse-click context menu
⦁ Convenient network installation
⦁ Large file support
⦁ WinRAR offers a mobile solution: RAR for Android
⦁ More than 45 language versions
⦁ Available for all major Operating Systems
⦁ Multi-format support
⦁ Professional and customizable interface
⦁ Integrated virus scan and search options
⦁ Unicode support

What benefits does a customer get with WinRAR license?

⦁ Free language versions
⦁ Free multiple home use
⦁ Constant Development
⦁ Professional support

How do you get WinRaR for free?

Just go to above website. I have found this website specially for you guys and it will help you in your work and it is convineitnt to use and easy too. I am also using it and I think you must give it a chance.

Conclusion:

So by my side the WinRaR is the best option instead of 7-ZIp.
So, there is how you can get free WinRaR to use and they also have a option to buy if you want to buy then it is there for you.