What to do during a loss streak?

Recently promoted to Gold 2 and was happy about it. Decided to play a few games today and lost 4 in a row... demoted to gold 3. Taking a break to get some lunch right now then I'll probably play some more. My question is how can i break this loss streak? I typically play Nami but the last four games made me feel sour about her. I wanna try Leona or Naut again but I was told they arent very good right now. I'm not tilted at all and this has happened before where I promoted to gold 3 then demoted the same day but was able to climb back up easily. I'm confident i can climb back up but what are yalls tips for breaking a loss streak? Play other champs? Take a break for 24+ hours? Just keep playing as normal?
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