6c 236b 6c is an automatic hitconfirm and frametrap. you can just do air combo after it or w/e since 236b launches. 6c 2a or just 6c 6c 6c repeatedly is also legit.
And no, thats not quite how the fuzzy works. You want to do 214[a] then iad jb, rising jb, then release the 214a. Fnero somewhat struggles to "set up" the fuzzy compared to C though. You either need some very precise spacing midscreen (sort of luck dependant) or get them to fully respect after a 5[c] or 2[c] (possibly with 236a, or 236c like mentioned before or whatever followup) so you can 214[a] then iad jb into fuzzy.
One of the important plus sides to his fuzzy is also that if they successfully block it you keep momentum.
Other tidbits, in pressure, throw out 214[a] when not too far (a few 2as or early 2b cancel), then 3c immediatly and hold up forward. If they jump you get air combo off the 3c and if they block your 214[a] keeps you safe and you can throw out more summons.
Do not play f-nero if you want to like, establish offensive space control with summons and then move in, that is what C is for. Like I said, the character works better when you work to severely limit the vectors the opponent has to work with, and then intercept them or move in when they are trying to figure out what to do.
When you are just trying to get people to respect your basic blockstrings you have to look at what they are disrespecting with. If they mash backdash or jump a lot then 5[c] and 2[c] work well, if they are spamming high shield or low shield you swap your 5 or 2 [c] respectively, if they are spazzing dp start canceling off 2b etc. Once you get people to start respecting a boring blockstring of 2a staggers 2b 5[c] or w/e then you can start being more lame with rising jb falling jc kind of crap or iad jump hold back spaced jb to frustrate people.
And just be a fag with jb beacuse that move is overpowered.