Problem accessing router settings

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Hello, for quite a while now whenever I try to play Pro clubs on FIFA my internet goes dodgy and I start to lag and disconnect and then for the next few hours my internet keeps disconnecting every few minutes to the point where I can’t play. I’ve recently tried to access my router settings to see if that does anything however when I put my IP address in, 192.168.0.18, it doesn’t load. Any ideas on what I can do?
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