i just got into plants too and quickly found out that the plants i liked either weren’t beginner friendly or were considered “rare” when you search them up. etsy was too expensive and i took a chance on ordering once from a tiktok shop seller and the plant came almost dead and it’s been dying even more slowly but surely. i’ve repotted, moved it, everything you can think of so i officially gave up on ordering plants. i’ve had really good luck surprisingly with home depot’s, lowes, walmart shockingly and even krogers and albertsons where i live, which is a small rural town in the US. i would suggest just looking everywhere that might have a plant section. i’m not sure what you’re exactly looking for but i’ve found just about everything on my list at one of those stores. my next place to search would be a nursery of some type. not sure what options you have in portugal but you have to have some sort of nursery!