anyone got recomendations for those japanese flip phones

hi, i just wanna say i am not that great with tech,but ive fallen in love with those japanese flip phones that work with apps like tiktok and other. anyone got recommendations which are actually good and how to use them. i have seen they only got between 16 and 32 gb of space so i will prob switch it between my now phone and that flip phone but i really want one. also which one are good a lot of people use aquos or the samsung folder (i dont think its aveliable in my country, at least cant find a site that sell them to me) but i accept all recommendations.