Should I give up on ranked

Hi Guys I've been away for a while (since s3) and never played ranked before. I've played a few normals to get my eye back in and a lot of custom games to get used to champ abilities and mechanics again but after dipping into ranked i'm currently 0-4 on my promotional series. I don't want to end up going 0-10 and end up in Bronze 5 (which i presume is what would happen unless riot sees a 0-10 as ridiculous and ban me from ranked altogether. Should I just give up on ranked for this season and start from scratch next season and just hammer as many normals as possible? Or grin and bear it and hope I can get a good team composition and win a few? Or if anyone has any tips to stop a losing streak then that would be great too :) Thanks
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