Tbh there's not a lot of point going to a really low ranked university (which I would consider to be BBC or below, or one that lets in people with these grades through clearing etc.) - unless of course it is highly ranked for your course or you are doing such a course that the ranking of the university doesn't matter - e.g. medicine/ dentistry (although these generally require A/A*s of course!). A family friend at a pretty rubbish uni doing a science degree has really struggled to get any jobs, mainly because his A levels were a bit rubbish and he was unable to get any decent work experience/ internships due to his low grades.
You would be better off retaking the year and doing some work (with a bit of work pretty much anyone can achieve A/B grades at A level tbh), or alternatively doing an access course/ foundation year at a well-respected uni/ transferring to a good uni after the year (for example I believe Nottingham does quite a few foundation courses with surprisingly low entrance requirements but guaranteeing entry onto their usual degree courses after successful completion of the year).However, some of these courses require you to fulfill certain criteria such as going to a poor school, having extenuating circumstances or coming from a low-income background I believe.
Another thing that is essential is doing a decent degree subject - pick an academically rigorous subject (that you love, otherwise you won't be motivated enough to succeed in your degree) or one with very good employment prospects, make sure you check out the employment statistics for each uni/ subject you are interested in and check what kinds of jobs graduates usually got. During your degree, get some work experience, do an internship, take on leadership roles in societies, perhaps learn additional skills such as a new language, take advantage of any opportunities for these as part of your degree (e.g. a language module, a year abroad option, a placement year, etc.), basically do as much as you can to stand out and highlight skills not necessarily learnt in your degree (e.g. communication, leadership, organisation, teamwork skills - easily demonstrated through being an active member of a society or doing some relevant work experience).
When looking at universities your main focus should be on the course and what it offers to you - pick one with good employment prospects, a good ranking, and opportunities for further development (e.g. year abroad). Then think about the other things the university offers - e.g. the option to take modules from other subjects, free language courses, business start-up funding/ advice, etc. After this, you should think about how happy you would be to study there (e.g. do you like the campus feel or want to live in a lively city?), any scholarships/ grants/ other financial help available (if applicable to you and you think you will need financial support), etc.