Incessant crying toddler

I at wits end with my toddler who seems to cry if placed in the crib and when I walk out of her nursery. I’m a stay at home mom and have lots of other things to do, I place her in her crib when I know I wont be able to see her for periods of time, I give her toys and sometimes play cocomelon when I’m not paying attention. I yelled at her tonight I feel awful but she cries for everything and anything every single day from morning to night all I get is crying and tantrums (I admit I don’t like her very much at the moment) I feel like a terrible mother seeing the look in her eyes when I yelled. Thankfully my husband took over and she’s now asleep, I guess being hormonal doesn’t help and the crying is getting overwhelming.

Please someone ease my mind that I’m not a bad mom for a bad moment I feel like crying with her when I can’t comfort her.

Edit: Some of you are just golden! I can’t even begin to imagine why you would think I leave her or abandon her she’s never been away from me for more than 5-10 minutes at a time (periods of time is a bad choice in wording), I’m human and have to use the bathroom and take laundry out and sometimes I have to step out, either way she cries with me and everyone like a wailing cry, it’s overwhelming I thought This app was where women come together not judge and make false assumptions about each other. Like I said golden. Thank you anyways.

Thank you to the mamas who gave me solid and true advice without making me feel like shit. I’ll try to use your methods to see if it helps her separation anxiety.

And thank you to those who were a “bit tougher” even though you offered no advice and just judgment I appreciate your input as well.