I think the problem with fans is you always look at what would have been different if a game had turned out differently......but the reality is once you change one element of the game you change everything...so a 1-0 deficit that ended as a 1-0 defeat might have been won if you equalised or it might have spurred the other side on and you lose 4-1 which would have been worse.
It is that infinite universe where every result can happen that drives us all mad....
An outsider view of your season says you had the same issue we had last season...conceding too many goals.....we fixed that with signings in the close season ( five new defenders) and having a more solid base has meant we a re reaping rewards from games we would have comfortably lost last season ( like at your place....)
There is nothing wrong with your attack....or probably midfield.....although defending starts from the front....
So maybe a defensive coach and a couple of solid citizens out of contract to supplement your good defenders.....
When Schumacher took over he hired a new coach for the defence....we were not an overnight improved unit but recently we have just been hard to score against......and no doubt his arrival has coincided with a better shape when out of possession. Also we have had players who previously drifted out of the game when we lost the ball chasing back and doing a job for us defensively.
So maybe you are not so far away from a fix.
As for next season ( and right now if we get into the play offs I think we will be outsiders to win them) a lot will depend on the players out of contract at the various clubs as to how well they go. We have most of ours for at least another season......we might well lose Broom if Posh want a fee but will have George Cooper back fit ( I hope). Garrick may be out of contract at Swansea....but is young so probably a fee there too potentially....
Every chance Cooper the keeper will be sold if the right offer comes along ( and maybe with a loan back if we do go up , but I expect him to be playing Championship football next season or the season after as a minimum, ideally with us but not necessarily. Sessegnon is out of contract and looks a good player.
We need someone to drive us forward....much as I hate to say it someone like Morsy would be perfect....just ideally not him! George Honeyman would be a better option but unlikely....
Plus there will be a whole heap of players looking for homes....so lots of opportunities to strengthen.
I expect Ipswich to be strong next season with a couple of United loanees given McKennas background, plus Derby assuming they are not encumbered with points deductions again....Barnsley/Posh could go either way.....Portsmouth /Charlton can\'t be that bad again.....the three that don't make it from this seasons shoot out and the next seasons Argyle...whoever they might be....anyone but Exeter I hope!
You have the chance to build early which the play offs always get in the way off...and we have a truncated close season thanks to the World Cup.....so we will all be back soon enough