Hi Jammy - Welcome to the Atlassian Community!
You can control access to projects through the permission scheme, and more specifically with the Browse Project permission in the scheme associated with that project.
Here is some more guidance: https://confluence.atlassian.com/cloudkb/how-to-restrict-project-access-for-teams-in-jira-cloud-953142266.html
Hi, Jira users! Do you use Jira alongside Microsoft Teams? We want to hear how you’ve used the power of Jira Cloud and Microsoft Teams (via the Jira Cloud for Microsoft Teams app) to achieve a team...
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