Recurrent UTI. To hydroureteronephrosis?

I've had 6-7 episodes of UTI in last 1 year..Culture report always shows Klebsilella Pneumoniae(not any other organism).. In June 2023,I had 1 bacteria(After treatment I had no bacteria in Dec 2023 in CUE) with normal pus cells and Colony count was 10,000..At that time symptoms were mild chills,nausea..Doc gave 1 week twice daily course of tab zostum o 200..After 2  weeks even though 1 bacteria was present in CUE,culture became sterile and symptoms reduced            After 1 month,I started having severe Chills,lower abdominal discomfort,nausea,loss of apetite,low grade fever(At that time I was taking meds for enteric fever-Taxim O 400 and Azithral 500) Urine test reports are attached.. Why am I getting bacteria in CUE(it has increased from 1 to 5) and why did colony counts increase despite taking treatment.. Also I'm having right loin pain,swelling in right feet Are both (Repeated UTI,Back pain)due to hydroureteronephrosis? If yes,then what needs to be done for the same..Kindly tell