This is all age appropriate and to be expected I know it’s hard for you but it is a phase that will pass, big feelings in a little body are difficult, take her to the groups there will be plenty of other mums and toddlers in the same boat
This is very age appropriate. I know that doesn't help you, but their brains are developing so rapidly and they don't have the capacity for a huge understanding at this age, despite rapid speech development. They speak more than they understand. The main thing is to validate how they are feeling. 'it is okay to feel sad... I know you are feeling sad' etc or 'i know you are cross, I would be too' etc. let them know that you recognise why they are feeling that way and let them know you are there when they need a cuddle xx
I don't know if what I'm doing is right but I try to divert his attention to something like asking him let me put you on the pram and give you a snack, or telling him let's go to see Dada knowing that he's gonna see him at home something like that and it works thank God 😊
What works for us is to “say bye” to whatever activity or thing, as u guide them away from it. If u haven’t tried that already