Patience is good advice. Smoking is more like shopping for clothes off the rack. You've got a few to choose from and basic sizes to find what fits like 'small, medium, large'. Vaping can be simple, as some said just adjusting wattage. It can also be more complex though like getting something made custom for you. So many options it can be overwhelming. Did you want something cotton, a blend, silk, cashmere? What type of neckline do you want, turtle, mock turtle, scoop, v-neck? You can tailor it for arm length, chest, waist, inseam, where you want the hem to rest. In that sense it can leave people staring blank.
I've more or less found my 'happy place' vaping but it didn't happen overnight. Over the last 3 years of vaping I've tried different stuff. It's not about a quick dismissal when someone says 'try it yourself', you're the only one who can judge how well something works for you specifically. Whether it's the type of coil, basic, clapton, mesh, multi-coil. How different types of airflow feel to you, taste of cotton, how you perceive flavors of juice.
I began with cigalikes (sort of like a pod before pods). Tight mouth to lung draw the way you smoke a cig. Then moved to an ego pen, still a restricted mouth to lung inhale but bigger capacity. Higher nicotine levels are more suited for mouth to lung, lower to direct lung like the subtank with the morph kit because the amount of vapor is significantly more. Think of it like alcohol, strong liquor is more for sipping while low volume alcohol like beer people typically drink by the glass/can, 6 pack or pitcher. It balances out. As others said 6mg seems like a good starting point, 3mg may even work. I started with 18mg but was puffing on mouth to lung smaller pens and I was a 2 pack a day smoker.
Some people like throat hit, others don't. That little bit of spicy kick to the back of the throat is what's referred to as 'throat hit'. If it's too strong on your throat try going to a different vg/pg ratio. Pg carries flavor better but brings more throat hit. So if you're vaping 65vg/35pg and it's a bit much, try 70vg/30pg or 80vg/20pg. It'll be smoother. Nicotine also adds to throat hit so if you're at 6mg, try going to 3mg. If it's not enough and not offered you can try mixing equal size bottles of 6mg and 3mg nicotine of the same flavor, mix them 50/50 and you'll get 4.5mg nicotine splitting the difference. You'll have to find what works for you, if you're getting headaches or light headed try lowering the nic. Not so low that it doesn't satisfy the cravings though or you could be tempted to smoke.
Try some different coils and see if one type tastes better than another or gives you the kind of inhale or vapor production you're after. It's a bit of a process but once you've sorted out which you like then you'll know what's best for you. Adjusting wattage is basically adjusting heat. Most coils come with a suggested range of wattage to guide you but it's not the only wattage you can use with it. Better to start at the lower end and work up 5w at a time or so. That way you don't set it too high on the power and scorch your wick inside the coil. You do that and the taste lingers and tastes really bad. (burnt hit). Or accidentally hit it when you're out of juice (dry hit).. also nasty. Again it's personal preference, some people like a hot vape. Others like a warm vape or cool vape. I prefer mine on the more mild side, slightly warm. I coughed a lot smoking and if the vapor is too hot it irritates my throat and makes me cough.
Once you get the basics down, then mess with the rest of the settings. I don't know what all settings the morph has exactly. There are things like preheat or 'power' levels usually labeled 's, n or h' for soft, normal, hard. That's how the mod will apply power to the coil and get it heating. Normal is normal, soft is usually around 10% of the power you have set in wattage, hard is usually 10% higher. It may last for the first second or so the fire button is pressed. So for instance if you have the mod set to 'h' and your wattage is 60w, it'll apply around 66w of initial power. Helps get the coils heating faster, then after however long maybe a second, the mod will drop power back to 60w for the rest of the vape until you fire it again. Youtube can be your best friend when it comes to looking over a device's capabilities. For example type in 'smok morph review' and various YT reviewers will guide people through the device. Follow your own path.
Wattage isn't a contest, 120w doesn't make the vape better than 85w necessarily. It's all preference. Mess around with it and find what tastes better to you. Various people here on the forums all have their preferred setups, some vape at 180w or 200w with big coils, others like me vape at around 60-65w on rebuildable setups, some vape 95w on subohm tanks with factory coils and others vape at 10-15w on small coils - and all are happy with their vape. I only say that because there are some that see it as a pissing contest and only 'real vapers' run their setup at 150w+. Not true at all.