It sounds like you are looking for the manga "Kono Subarashii Sekai ni Shukufuku wo!" or more specifically "My Life as a Villainess: All Routes Lead to Doom!" (Japanese title: "Hamefura"). This story involves two friends who reincarnate into the world of a fantasy novel. One of them becomes the antagonist character, and they both try to avoid the bad endings laid out in the story
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❧ 𝔾𝕒𝕪
❧ 𝔾𝕒𝕪
❧ ℝ𝕠𝕓𝕝𝕠𝕩 - 𝕥𝕒𝕜𝕖𝕟
❧ 𝟙𝟝
❧ 𝕗𝕣𝕚𝕖𝕟𝕕 𝕞𝕖 𝕠𝕟 ℝ𝕠𝕓𝕝𝕠𝕩 𝕀 𝕜𝕟𝕠𝕨
𝕀’𝕞 𝕒 𝕟𝕠𝕠𝕓, 𝕚𝕕𝕔 ._. 𝕄𝕡𝕒𝕤𝕥𝟘_𝔸𝕝𝕒𝕟
𝕃𝕠𝕧𝕖 𝕦
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❧ 𝟙𝟝
❧ 𝕗𝕣𝕚𝕖𝕟𝕕 𝕞𝕖 𝕠𝕟 ℝ𝕠𝕓𝕝𝕠𝕩 𝕀 𝕜𝕟𝕠𝕨
𝕀’𝕞 𝕒 𝕟𝕠𝕠𝕓, 𝕚𝕕𝕔 ._. 𝕄𝕡𝕒𝕤𝕥𝟘_𝔸𝕝𝕒𝕟
𝕃𝕠𝕧𝕖 𝕦
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