Armpit Odour - help a girl 🥲

Hi everyone, So I need tips to solve my BO 😭 I am from Brazil and my whole life I never had that problem. But I’ve lived in the UK for a while now and since I started living here I always have a foul armpit smell that I can’t get rid of! I tried different deodorants, different body wash liquids, perfumes, everything! I wash my clothes very well and regularly and shower almost everyday. Whenever I go back to my country the odour disappears. So I am thinking it may be related to the hard water here? Brazil only has soft water. Anyway, help! 🥲🥲🥲

UPDATE; solved it by using sulfuric soap and switching to the Brazilian deodorant I used to use (which has aluminium) and I smell like flowers again 🩷