Came back from mat leave last week and I feel so isolated in the office

Nothing about what I’m now doing for work is what I did pre mat leave (and did for 5yrs+ at the same company) and also pretty much sat away from everyone I used to work with due to desk spaces

I’m already so unhappy but also feel like I can’t say anything as I go on mat leave again in 4 months, but 4 months is still a long time to be unhappy at work

Just wanted to rant x