this is by far the best translation available. it’s not up to date yet (only halfway through so far) but the translator releases new chapters pretty much daily https://avelilium.com/story-about-buying-my-classmate-once-a-week/
i get that it might feel that way now but that’s just cause it’s a slow burn. although it is a bit frustrating with the manga’s super slow release pace which is why i’d recommend reading the web novel