Help identify these trees please :D

Hi My name is Michael, I live in Laval which is a city directly north of Montreal Canada. I used to love gardening and having plants but its been a while and I'm thinking of renewing my hobby by starting herbs, vegetables and hopefully bonsai's! I have an issue right now and I am in need of some advice. I was somewhat put in charge of purchasing and maintaining plants for our office. Now I purchased around 15 plants and make sure to water them every Monday. Now I know there is an adjustment period that plants need when they are in a new environment but its been almost a month and most of them are doing well except two. One is a large 6 foot tree which I do not know the name but looks like a tropical Christmas tree to me and the other is a small desktop plant. Both are looking pretty pathetic and when you touch them they have needles fall off and it feels very brittle. I will attach photos and hopefully someone can help me out. I had posted this ad in the welcome section and rainbowgardener gave me some advice to post it here in hopes to get a better answer. gumbo2176 had replied that maybe its root bound but I had already checked that, everything looks good ....uhh well except the plant lmao. I bought 15 various trees and plants and its just these two giving me a hard time. Thank you very much for identification of these two, good care taking tips and any advice on bringing them back from the brink of death, thanks a bunch and have a green day 

Michael from Montreal