The FD is there as an aid. It is not the be-all and end-all of flying an aeroplane despite what some check pilots/simulator instructors think.
If the FD bewilders you on an ILS or go-around (two or one engine) then ask your instructor if you can fly the go-around complete raw data. Now you can see the body angles that are required crystal clearly.
Once you feel competent at full raw data, then when you use the FD you will be aware of its idiosyncrasy's - and as someone said previously, you can "look behind the FD" and smooth things out. 100% FD use can subtly erode your normal instrument scans.