[ Toddler & Preschooler ] Open Question : toddler bed pls help first time mom?

ok my daughter is 15 months old and recently when we were moving house our cot broke so at the moment i have my daughter in our travel cot and im afraid that if she wakes up in the mornings or during the night she may topple the cot , as she is starting te climb out i have caught her twice now with one leg over the side of the cot so to my question ha is it ok to get a toddler bed now im a first time mommy and i dnt know if there is a certain age for toddler beds see i would prefare her to be lower to the ground if she were to fall out of the bed thn to injure herself toppling out of a cot so do you think this is a suitable age for a toddler bed thanks in advance