viabtc vs solo ck vs mining madness

Hey,

viabtc luck rate is zigzaging from mostly %20 to %500 (half hour gaps and sometimes almost 10 hr gaps between block,where real mean is 2hr)
also solo ck is sometimes not producing blocks for 2-3 months and sometimes producing each 2-3 days. (luck is %30 to %300)
other pools kano etc are very rare, i dont know mining madness etc.
in my solo mining debugs with rig rentals ,sha256 demo/ debugs and real life examples ->

i have seen worst luck is 1/16 meaning , 10 min avearage block time and biggest distance between blocks are 160 min.
best luck is million X of %100 luck for some of solo miners (i mean s/he submitterd around 150 m share and reached the target 150 t difficulty)

regarding the scenario at first phragraph , is mining to a pool when they it has good luck time is better idea ?
or it's just random, according to poisson %64 of blocks mined in 10 mins , are this edge cases just product of poisson's limits?
every time some exceptions appearing , it's diverging back to mean in final. so, is there explaination