Toddler acting out

I'm sure I'm not alone here, but it would feel good to confirm. 😅 My daughter has been so challenging lately. She can't hear "no, because..." and she starts to meltdown. I've always been super calm and patient, but it's overwhelming to have someone crying behind you all day. It's what she wants or a meltdown, I don't even have a chance to try and explain things to her lately. She was such a calm, happy baby... Since she turned 2 things have been just crazyer and crazyer. 😂