need a really good yuri that is for lesbians!

if you don't mind, then these

https://luscious.net/c/yuri_manga/albums/is-my-hobby-weird_259964/view/
https://luscious.net/c/yuri_manga/albums/konya-mo-anata-to_275788/view/

wow! those are really nice! Thank you anonymous!

Even if it's one year later since you asked for them, here are some beautifully drawn yuris with steamy sex scenes:
http://www.mangago.me/read-manga/moonlight_garden_kang_unnie/
http://www.mangago.me/read-manga/what_does_the_fox_say/
http://www.mangago.me/read-manga/kantai_collection_dj_when_i_m_drunk_i_might_be_able_to_have_sex_with_you/
http://www.mangago.me/read-manga/kantai_collection_dj_kaga_no_hana_wazurai/
http://www.mangago.me/read-manga/umi_to_anata_to_taiyou_to/
http://www.mangago.me/read-manga/chiisana_maid_san_no_himitsu/
http://www.mangago.me/read-manga/ojou_sama_to_maid_san_ga_yuri_yuri_suru_manga/
http://www.mangago.me/read-manga/hime_sama_to_dorei_chan/
https://dynasty-scans.com/chapters/maid_and_madam

And pretty much all of Mira/Peachpulsar's yuri manga manage to be both hot and cute: https://dynasty-scans.com/authors/mira