Why does my toddler wake so much at night?

What are these constant wake ups through the night I’m exhausted I’ve tried everything nothing is working she’s 2.5 years please somone give me so suggestions

What does the toddler do throughout the day? What does the toddler eat?
What is the toddlers environment like?
You gave one question with no further explanation.

What is the bed time ? Maybe put her in bed a little later , try to increase her activities during the day ( to make her tired )
No long naps or not naps at all , put some white noise music .
A melatonin now and there so you can rest will not hurt her

Sleep regression. Could also be getting 2 year molars. Also could be night terrors, growing pains etc. what is she doing when she wakes up?

I went through this around the exact same age with my daughter. Few months later she was diagnosed with Autism. I hope it’s something different for you.

Is the baby hungry give them bananas sweet potatoes avocados fill em up. Otherwise talk to your dr