IMO you need to do a bit of research, that fact you had a Jewel in a 10g is worrying, never mind that you add 2 more fish including a GT. Take your time, do some reading up on fish and there requirements, it pays off in the end as you will not have all the stress you must have had lately. Speak to the guys in your local shop, tell them the honest size of your tank and ask them what would be suitable for it.
There not really any cichlids that can cope with a 10g unless you are prepared to put the work in, a single pair of smaller sized Apistogramma can work in a 10g, but I wouldn't recommended them as in a tank that size you really have to be prepared to put a lot of work in, tests, water changes, getting the pH right and the tank must be fully established.