3. I gambled a few Satoshis on
https://lightning-roulette.com/ (my 100 Sat deposit never arrived at the site, I don't know why, but I'm pretty sure this isn't LNs fault)1. Whose Fault is it?
a. yours
b. lightning-roulette
c. some random LN hub
I think b, but can't be entirely sure.
2. Were the 100 Sat lost or did it return to your account balance?
LN worked fine, the payment was sent and not returned.
3. Does LN not seem overly complicated to use ,
and In your personal opinion, would not a simple web wallet that handles the complexity be more useful to you.
ie: a 3rd party making it easy.
I used Eclair (Android), which works fine. The only thing difficult is when I want to receive a payment on my phone, and have to transfer the request to my PC. I did that by email because I couldn't use a QR-code.
Working with only one device would solve that, but it's very easy to send funds the other way (from Eclair to a website on my PC). This won't be any different when using Bitcoin, but I don't usually try to receive Bitcoin from a website on my PC to my phone.
4. Who do you contact when there is a problem of lost LN funds?
For 100 satoshi: nobody

For larger amounts: the third you're dealing with. Basically the same as any other Bitcoin payment.
If you mess up and lose your funds, you're on your own.