The type of FX matters, and you also need to specifically add an FX track on the timeline to be able to place effects there. They can't be placed on a standard A/V track, so I'm unclear on what you're seeing.
Maybe a screenshot would help. Use
Alt+Print Screen or the Windows snipping tool (
Win+Shift+S) then save the image as PNG or JPG. Click on the
Attachments button below the forum's text box to upload and share it here
As you noted, all FX can be dragged directly onto a clip and will only affect that clip. Many FX can also be applied to a special FX track and they will apply to all clips on tracks above them.
Some FX, like Color Presets and Color LUTs can
only be applied directly to a clip and cannot be placed on an FX track. In addition, no keyframes are available for these kinds of FX.
Does this help?