Ive completed my igcse, however do i still need my O levels to go to open university

The information i keep finding is kind of conflicting? At my previous school when i did my IGCSE’s i was told that was enough and i didnt need O levels (though at the time i was planning on continuing my studies and doing my A levels) however i had to switch to the portuguese system and between the language change, my dyslexia and my adhd im barely passing.
I want to just be able to get my bachelors in psychology through a flexible online uni in english. Is IGSCE enough or do i need to tough out another year and a half/2 and a half years to go to uni?

My children both did iGCSEs - they are equivalent to GCSEs and O Levels (though we no longer have O levels in the UK, GCSEs replaced them). Most UK universities require A levels or their equivalent. They usually say how many "Tariff points" you need for each course (each uni and course has different requirements) - there is an explanation here https://universitycompare.com/advice/ucas/ucas-tariff-points . If you are a mature student or have industry experience for example then some universities/courses will be more flexible and you'll need fewer points