The previous designation of the LLC did not allow business losses to be taken personally. I understand that once I became solo I could take losses personally. Can I claim the previous losses since it is still the same company?
I am going to page @Rick19744 for your specific question (and to provide, possibly, any other relevant details).
However, if the losses are passive losses, you cannot deduct them from income (other than any passive income you might have) until you dispose of the activity (to an unrelated third part in a taxable transaction).
We need additional details to provide any guidance: