Several of the "bad tables" are actually great opportunities as long as you know how to adjust.
If you usually play against one type of player, you might play exploitive lines instead of solid poker. For example, you might fold too much on the turn after your opponents call your flop bet if your opponents always have something when they call, even for one small bet. When you run into players who peel lightly and who bet the turn often when you check, you will be the one who is exploited. As long as you are flexible, and can recognize the situation, you don't need to run from the table, or to tighten up. You need to realize that your earlier play was exploitive, and does not fit the current situation, and you need to stop giving these players credit for hands when they call the flop and bet the turn. If you know why your normal play is profitable, and in which contexts, then you should have little trouble identifying situations where you need to change and how to adjust.
The only situation which was described which looks bad to me is 5 other tags. If these are good tags, then we might all end up losing to the rake, and they certainly are not as profitable opponents as casual players.
1) If someone is cold-calling every one of my raises and peeling every flop and turn, it means he is a calling station. I loosen up my value-betting range. When I miss, and am behind his range, I may have to play my hand as a bluff-catcher. Semi-bluffing is occasionally right, particularly on the flop. Pure bluffs should be avoided before the river. If this player bets very often when checked to, then I will increase my check-raise frequency.
2) If there are 5 loose fish, then I bet/raise for value and pump strong draws for value. This is very profitable, and you hardly need to do anything to exploit these players. They might hit two pair with 72o? That is a bad gamble which usually fails, and I still have a huge advantage because I can hit two pair with AT or KJ. If we both miss, or hit one pair, or two pair, I win. I don't care if I don't "control" the table if my win rate becomes 5 BB/100.
4) If there is a maniac making other players tilt, I will enter pots with the maniac with a much wider range than I normally play against his actions. I do not confuse his raises with real strength. I call down with weaker hands than normal, and overplay decent made hands on early streets, e.g., capping with TPGK and raising the turn when I would ordinarily just call down. I count on the maniac overplaying bad hands. If the other players are on tilt, that's great. Their sense of balance will be off, and they will make terrible calls against me, confusing me for the maniac when I am actually playing a more normal range against them. I will not bluff the other players much because they will be used to seeing bluffs.
You should practice beating these situations. If you plan to move up to higher stakes games where people generally play better, you still need to know how to play against calling stations and maniacs. Instead of tables with one other tag and 4 fish, you will be playing against 3-4 other regs and 1-2 bad players, and you need to know how to get the most out of the pots you get to play against the bad players. Almost universally, people find their win rates (in large samples) go down when they play against better players.
