 If you liked
Lv2 kara Cheat datta Motoyuusha Kouho no Mattari Isekai Life
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 ...then you might like
29-sai Dokushin wa Isekai de Jiyuu ni Ikita......katta.
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Both stories involve very strong MC who end up considered heroes but have no intention of being tied to a country, so they try to live their lives in peace. Both also scored a partner right as soon as they got sent to their new world.
29-sai Dokushin the MC is not as OP as Lv2 kara Cheat, since he needs to actually level up to get stronger.