I am in the same situation but not because they are not effective, i've another type of sleep disorder. I'm opioid addicted, and not even strong opioids (where in the last years 99% are just Zenes that is a terribad class, very high analgesic potency with most of them flat euphoria and no warm body well being, just good for nodding or passing out - other than destroying tolerance very quickly and even longer time to restore it) - therefore if you are not opioid addicted with scripts, avoid them until finally proper new classes will start replacing Zenes (said this, despite my hate is certainy better than the mexican cartel totally random all-in-one mix xylazine boosted dope, at least strong opioid addicted can use Zenes safely..the fact there are no RCs opioid between 2x and next step 70x is a gap that needs to be filled since years).
Avoid benzos as well, at least if it's intended for long terms daily usage. If sporadic, then if Triazolam is not working I would not waste further time with this family.
What are you looking for, since you mentioned Methaqualone (currently is the only compound that help with my issue), are Gaba-A agonists - if you are not a person with compulsive redose risks, the only one you can find in the medical field, prescribed for some cases of very high ADHD who needs to take really tons of Lisdexamphetamine during the day, prescribed in USA and UK is Pentobarbital, but here you cannot really fuck up with dosages.
The safer alternatives, respectively the ones you can find, since barbiturates despite being one of my fav class (some are "sedatives" just by definition - since they have some part where the rush and euphoria is surpassing the mainstream drugs like amph/cocaine) they are very dangerous if not used very correctly, and the pharmaceutical ones still existing are totally worthless. Phenobarbital got an insane half-life. And nobody is doing anymore clandestine synth of the recreational golden age ones - are the ones below:
(note: the details about pharmacology are quotes and snippets from people with a proper knowledge - sadly I do not have any background in chemistry or pharmacology, but I left them in the notes in the way you can do further researches or talk with other competent persons)
- carisoprodol - That's ubiquitous and it metabolises into meprobamate which binds to the barbiturate/picrotoxin binding site - and carisoprodol itself has methaqualone like properties before it's metabolised into meprobamate. It doesn't have the same magic of methaqualone but it's commonly called diet methaqualone and is very easy to obtain. You may have to experiement a bit as it has a very steep dose response curve and the Indian pharma is notoriously loose with quality control.
- Gaboxadol is a gaba agonist very easy and cheap to obtain, supposed to be similar to muscimol, but not hallucinogen.
- Bretazenil - it's a high affinity partial agonist and the interesting thing about it is it affects alpha 4 and alpha 6 subunit containing GABA-A receptor complexes, in addition to the alpha 1,2,3 and 5 containing ones targeted by other benzodiazepines.
Needless to say the best one that will certainly work, but even in this case, certainly not for regular usage and it's tricky to get the right dosage is GHB.
Another approach non Gaba-A could be Thalidomide. Please note if you are female and pregnant or/and intending to, it MUST not be absolutely used, if using it before pregnancy stop it completely 6-9 weeks before.
Another very different approach but worth a shoot could be Daridorexant.
A last one that actually worked very well for some people I met, is Trimipramine - but you should seek the liquid one / bottle, where 1 drop = 1mg. It's very important to avoid feeling a tired zombie the day after to take the right number, if your hit the sweet spot you will have a good sleep without feeling dizzy the day after.
I've more options that I could list, but here we are going in more obscure or dangerous compound, I'd start with the ones mentioned here first, since they can be obtained relatively easily.
Good luck!