We have the players we have.
We haven't added to our squad enough over the last few years to maintain our strength, and what is more we have actually taken away from it.
Without adding to the squad we have, we must accept the squad we have, and stop expecting it to produce miracles.
Certain players are at the end of their career now, and can't be expected to carry our team. Players such as Neville for example have been good for our club in many ways, but they are not at their best now. If they are picked, get behind them. If they are poor on the pitch, understand they are almost at retirement age, and should have their feet up now. It's not their fault they aren't 25 any more, nor is it their fault David has to rely on them.
Our situation is what it is.
Why do fans get frustrated 'every' week?
Understand the situation, and the frustration will be replaced by acceptance. If things get better, then great, but being frustrated, and venting the frustration is not good for anybody.