Why is my 95 Toyota camry XLE SHAKING!!? :( ?

In addition to the vacuum leak being that your car is a 95 you might also need to change your motor and transmission mounts. If your mounts are shot then your engine and have room to sway around which will make a big difference to you because you will feel the impact when switching gears as well as driving because theres nothing holding your engine from moving. Have that checked out.