I feel like the Bell Gargoyles are the last challenge that will cause new players to quit. If you beat them it's sort of like acknowledging you understand the game can be bullshit at times but are determined to finish it regardless.
Keep that shield up and wait for your opening. You can get a few free hits in if you strafe around the gargoyles as they breathe fire since that animation takes a long time.
What weapon are you using? Everybody's suggestion to upgrade it is a good one but you might consider using a heavier weapon for this fight since it will knock bigger chunks off of their health and remove the 2vs1 part faster.