Take it one day at a time, May is great as there’s lots of long weekends — so short weeks in school. I’m in NRW and it took quite a while for us to feel settled, we’ve been here 10 years now, but lots of ups and downs to start with.
Is DD2 in kindergarten or grundschule? Is she’s 5 she doesn’t need to be in school so could you look at removing her if it’s that bad? Or are your DDs in international school? If so, join all the groups you can through that and work out which one suits.
AWC is also worth a try, you don’t need to be American to join, it wasn’t for me, but may be at least an ‚in‘ to something more social.
Have you any language lessons, settling in assisatance from DHs work? Use everything they offer......
Have you looked at Toytown for any local English speaking groups? They’re most active in Bayern/München, but that’s how I met up with other expat mums when I needed support (admittedly about two years in).
Are you ina village or a town? There may well be people looking to learn English in a ‚tandem‘ setting, so you get German in return — might be worth a look?
It does get better, but if you need to rant feel free to pm me.