how to select multiple values at once when filtering

not sure if i’m wording this correctly but i work with a masterlist of about 2,500 items and i only need info for 150 of them. i’ve been clicking the drop down > unchecking “select all” > manually selecting all 150 of the items i need so that im only left with information for the items i need but is there an easier way to do this? can i somehow filter for multiple items at once? i’m pretty new to excel so i apologize if this is common knowledge