manga collections

hey guys, i’ve started to collect manga, but i am very cautious not to waste money on series i don’t like and leave it incomplete so i only buy multiple volumes of series that i have read and really loved.

however, i dont mind risking it for standalone manga (one volume) or VERY few (1 to 3 volumes) so any recommendations and also general tips if you guys collect ^^

i don’t mind any genre (i actually encourage a variety bc i wanna expand my collection) except no little to no nsfw just because visitors will see.