Hi everyone, can anyone identify this cactus/succulent? Thanks in advance for your suggestions
Looks more like an Epiphyllum (or Orchid Cactus):
https://adamsjunglecacti.com.au/products/epi-hybrid-kiwi-honey-dew-515 It is a popular houseplant and is very hardy.
I think it is Pfeiffera monacantha, it is an epiphytic cactus which means it doesn't grow in soil but on trees.
See here for more information about how to grow and take care of this plant.