I also prefer a more minimalistic life, but don't like the ikeaplant whitecubeshelves aesthetic. I lean more towards a 'kawaii' aesthetic. I know a lot of vloggers and such make it seem like you need that aesthetic to be minimalist, but you don't. You can get things you need that have the aesthetic you like. For example, clothing and bedsheets, rugs with busy patterns, lots of colors, etc. There's also nothing wrong with having some art or posters on your walls, as long as you don't find them distracting/they don't require a ton of maintenance. I think what's more important for minimalism is investing in good quality items (can get for cheap second-hand sometimes), reusable instead of disposable items. And just getting rid of things you won't/don't use realistically. For example, if you tend to pile up books because you like the idea of being a reader, but in reality you don't actually read them, get rid of them.