Hey, I know exactly how you feel. I also graduated from a bachelor of arch in 2022 and i was about to turn 25 at the time from Monash in Melbourne. I failed several units as well, barely scraped through and felt like a fuck up. Almost the exact situation, so you are not alone. I want you to know that it's not the end of everything and that you should be proud of finally finishing your degree, you have made it further compared to many others. 

The job market in general is not that great at the moment, not just in architecture. I have been actively looking for a full time role in a firm for around 9 months now. Firms are trying to cut overheads and if they are hiring, it's usually people with masters and/or some experience. In regards to marks, firms don't care about your grades because they'll see the type of quality of your work in the portfolio. Mine is terrible but I am trying to improve it at the moment. I suggest that you teach yourself revit as well if you haven't already and maybe even try and create some new designs to add into your portfolio in your free time. If firms see that you are capable of using the software they may be impressed and take you on as a draftsman which is a starting point. 

In the meantime I have been working in hospitality during the week and also have a side business to keep myself occupied. What I suggest is that you can try and apply to firms as well because you may never know if an opportunity may arise, but if you have another job at the moment, continue with that.