Microsoft Teams

I have to say I am not enthused but here we are. Why is nothing centralised? Calendar in outlook, calendar in teams and no specific calendar app to have open in a tab all day.

My query for now, how do I set up an out of office in my calendar. In google it was click, out of office, toggle to reject new or existing meetings and save. I try it in outlook calendar and it ooen viva insights, I do it on there and try to open the app fully but it is just stats and no out of office tab or setting.

Everything is hidden.

Does anyone have a recommendation for a Teams "Operator Connect" provider which will do a single number for a single user? Ideally, either a British or Irish phone number (and most calls will be made to these countries, and a few to Germany, Spain and the Netherlands).
Ideally, I just want something I can fill in my details for, not have to talk to sales reps, and not have a minimum number of users I need to pay for (it's just me).