Should i buy another pump

I have a momcozy s9 which I bought for £100 but I’m starting to leave the house more but find myself struggling to stay out for long enough due to pumping. I bought it cause it was cheaper and it held more milk but realistically im making 1/4 of what the pump can hold. I regret not buying a more discreet pump so I can at least pump on the go- my only thing is, should I buy another pump more discreet pump? Or should I just deal with it and pump in the toilet whilst im out and about for 20 mins. I just want to justify paying another £150 for another pair of pumps, what would I do with these ones.

Fyi I do have a medela symphony which I got from the hospital on loan which is my primary pump. I have PPD and PPA and i need to leave the house for longer periods but find myself struggling staying out long enough due to needing to pump.