Additional meeting and call-related features and issues within Microsoft Teams for business
Hello Bikash! My name is Janbaz, and I am an Independent Advisor as well as a long-time Microsoft user. I'm sorry that you are experiencing this issue, and I am hopeful that I will be able to help you find a satisfactory solution.
Dear Bikash, you can invite them to join and your guests can join through the link or an invite calendar.
Please check the below article related to your issue:
Join a meeting without a Teams account
Join a meeting in Teams
Dear Bikash, I still did not got the main question from you, If these steps did not help you please share your question once again with more details.
Please let me know if this doesn't work or if you need further assistance.
Warm Regards,
Janbaz