Can tiny bubbles or foam in urine be a bladder infection ? i'm a type 1 diabetic with uncontrolled diabetes or is it more so kidney i have 1 kidney

No : Foam in the voided urine is not a sign of urinary tract infection. Presence of diabetes or having only solitary kidney also is not associated with foaming. In the urine.

Protein in urine: Foamy urine is more commonly associated with spillage of protein in the urine, a common manifestation of diabetes. It indicates damage to the kidney and evaluation by a nephrologist is recommended in addition to optimal glucose control.