Wormholes

Just a couple of points, the comments regarding skills are quite correct, Sleepers are hard, but there are some things to do whilst you get them to the ideal point.

Firstly high meta modules will help close the gap,
do not fit faction and deadspace or god forbid officer modules.
T2 is definately your goal though.

Use your rig slots! Core defence shield purgers are the rigs you need to boost your shield recharge, you are simply not going to get a sufficient passive recharge without them, tech1 are reasonable for the improvement they provide. If you cannot fit rigs, you really MUST get the needed skills to the minimum urgently. This applies to ALL space. You may choose one rig to boost missile range, with 2 purgers though, this is your choice, but from the sound of your experiences, getting the skills for missile range to 4 urgently would be a wiser use of the rig slot.

There are other ways of fitting your drake, it is a good ship for the Job, others may make better or different suggestions, but a passive fit drake, with purgers, is a perfectly valid choice.

Keep moving, even in a passive drake, it helps reduce damage.

You have a drone bay, do not forget to make the most of it.

Keep the cost sensible, you must consider everything you bring into a wormhole lost, the trick is to earn more than gets destroyed.

Not all sites have sentry guns, they are a nightmare in the low class holes, and cause even highly skilled players to curse them.
Look up on the internet, the sites, learn them, and learn the triggers. Even a C1 will overwhelm the unprepared. But you can probably manage Most C2 sites if you plan well. pick and choose the sites, some you are wise to pass on.

Data and relic sites are significantly harder than their hole class indicates, a good rule of thumb is to consider them a nasty site from the class above, until you know them well.

Pratice using Dscan, every 5 seconds is NOT too often. if you see probes,or a ship appear, even if just for a moment, do not assume it is just a harmless scanning boat, it probably is not.

Once you have completed the site, do not forget to salvage, melted nanoribbons, you get in some wrecks, are a major part of your reward. Look into the mobile depot and making safe points, there are ways to use it to aid in your defence, or switching modules for salvaging -looting. Dropping a mobile depot/ mobile tractor,with salvagers onboard, is helpful. As is having an emergency rack of warp core stabilisers and Medium MJD/extra shield extenders to refit to. This Can give you options for possible escape, but nothing replaces being aware of your environment

Hope that helps and welcome to wormhole space.

try this

harbinger
high slots
6x meta4 tech1 beam lasers and 1 salvager turret optional drone link augmentor. (best are t2 lasers)
multifrequency + standard + radio crystals]

medium slots
2 cap booster medium and some cap charges
10mn mwd
one micro jump drive

low slots
em therm kinetic explosive hardeners , yes sleepers do omni damage. if you can use tech2 then tech2 if not then tech1 meta4 (best are shadow serpentis hardeners but too expensive and as good as tech2)
damage control tech1 meta4 or tech2 if can use
medium armor repairer meta4 tech1 or best tech2

rigs
you can put two pump rigs to boost your reppers and one capacitor rcontrol circuit rig

15x small drones warriors tech2 or augmented warriors (best are tech2 thought)

you will need mobile depot and some additional drones plus salvage drones
^^^
this harbinger served me long time and had no problem. for site running and is not so expensive.
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option no 2 is artillery fitted gnosis , same low slots and same mid slots just two more med slots , you can put ecm jammers or tracking computer + sensor booster

Thanks to all of you, I already started skilling. Btw, do you think I can do something in null with the current ship or is it too hard? Alternatively I could do some Highsec anomalies, but they really pay nothing. Or I could clean some Wh belts or gas clouds, if I manage.