The 29-18 loss was their second of the Championship, after defeat against Ireland in Dublin, but Roberts says they are capable of bouncing back again.
The 27-year-old has become a symbol of Wales' style under head coach Warren Gatland with his powerful ball carrying.
But he insists they will continue to keep faith with Gatland and the coaching staff as they look to end the 2014 RBS 6 Nations on a winning note against the Scots.
"We have a very experienced coaching team who have been around a long time," he said.
"People will say our game-plan is quite predictable, but it definitely isn't.
"We like to stay unpredictable on the field, but we've taken the wrong options on the weekend at times. It's tough, but we stick with it.
"We have to put trust in the coaches, put trust in what we are trying to do on the field and ultimately execute better as a team.
"We work in an honest environment here. Ultimately the blame and responsibility has to be on the players. A lot of us have been round a while and it's not about coaches pointing the finger anymore.
"It's about us players putting our hands up and admitting we were poor and searching deep within ourselves to raise our game for this Saturday.
"The coaches can do all the finger-pointing and shouting they want, but we are the guys on the field. Ultimately, we are the guys who aren't quite there at the moment."
Roberts keeps his place for the visit of Scotland but Gatland has made six changes in all to his side.
Leigh Halfpenny and Rhys Webb are both out injured with Liam Williams coming in at full-back and Mike Phillips returning at scrum-half.
Gatland has also dropped Rhys Priestland, Adam Jones, Richard Hibbard and Jake Ball with Dan Biggar in at fly-half, Ken Owen and Rhodri Jones coming into the front row and Luke Charteris partnering Alun Wyn Jones at lock.
"There were times at the weekend when we had the opportunities," added Roberts. "The systems we put in place, the tactics we put in place, we didn't execute them.
"You watch the game back and what we've practiced in training we haven't done to the best of our ability and that's annoying.
"We created problems in England's defence and we just haven't chosen the right option when we've been presented it and we all have to shoulder the blame for that."
WALES TEAM TO FACE SCOTLAND
15. Liam Williams (Scarlets)
14. Alex Cuthbert (Cardiff Blues)
13. Jonathan Davies (Scarlets)
12. Jamie Roberts (Racing Metro)
11. George North (Northampton Saints)
10. Dan Biggar (Ospreys)
9. Mike Phillips (Racing Metro)
1. Gethin Jenkins (Cardiff Blues)
2. Ken Owens (Scarlets)
3. Rhodri Jones (Scarlets)
4. Luke Charteris (Perpignan)
5. Alun Wyn Jones (Ospreys)
6. Dan Lydiate (Racing Metro)
7. Sam Warburton (Cardiff Blues)
8. Taulupe Faletau (Newport Gwent Dragons)
16. Richard Hibbard (Ospreys)
17. Paul James (Bath Rugby)
18. Adam Jones (Ospreys)
19. Jake Ball (Scarlets)
20. Justin Tipuric (Ospreys)
21. Rhodri Williams (Scarlets)
22. Rhys Priestland (Scarlets)
23. James Hook (Perpignan)