Hello Xavier H,
Thank you for reaching out to the Microsoft Community. My name is Eunice and I'm happy to help.
I am sorry you are experiencing this problem. Creating a new group in Microsoft Teams is a straightforward process. Here's how you can do it:
1. Open Microsoft Teams: Launch the Teams application on your device.
2. New Chat: Click on the 'New chat' button at the top of the app.
3. Add Participants: Type the names, email addresses, or tags of the team members you want to add to the group.
4. Set a Group Name: Click on the pencil icon at the top of the chat window to name your group chat.
5. Start Chatting: Begin typing messages, sharing files, or scheduling meetings with your new group.
You can also add more functionality to your group by clicking on the '+' icon to add tabs like a shared OneNote or other resources.
Reference: https://support.microsoft.com/office/a79afa20-aa01-44a3-b33d-5eaa72f6404f
If you are looking to create a more formal team with multiple channels, you can select 'Join or create a team' at the bottom of your teams list, then choose 'Create team'. From there, you can decide whether your team will be private or public, name your team, add a description, and invite members.
Remember, the ability to create teams may depend on your organization's settings, so if you encounter any restrictions, you may need to contact your IT administrator.
Let me know if you need more help.
Regards,
Eunice