When completing a 2M sat trade on robosats, I couldn't do it with own lnd node, route kept failing even though I had a 10% max fee, more than enough liquidity a 3 good channels to very well connected nodes.

I had to send the 2M sats from my lnd to my phoenix wallet, but couldn't do it in 1 go, had to split it in 4x 500k sat invoices, otherwise the payment would fail, even though I had bought 4M incoming liquidity in phoenix.

Then from phoenix, I could finally pay the 2M robosats invoice and complete the trade.

Maybe I'm just a terrible node runner who doesn't know what he's doing. 

 nah. You're just pushing the limits on generally available liquidity along routes. Much higher success rates at under 1M.  

 Understable. But still terrible UX. 2M sats is not even that much. 

 Peak UX 

 Peak stupidity. A professional certified LN node runner would know exaxtly what to do! 

 Where does one get certified? 

 Here you go:
nostr:nevent1qqsxt3sn6qyegs52k9rj8lwwweggv4vw2j7ev7gu57m4y0msvvsag7cpz4mhxue69uhkummnw3ezummcw3ezuer9wchsygxpax4n544z4dk2f04lgn4xfvha5s9vvvg73p46s66x2gtfedttgvpsgqqqqqqs3z5fh5 

 I love watching you run victory laps after winning a game nobody else is playing 

 A veces Lightning network puede acabar con tu paciencia y tiempo. Pocos hablan de esto, quizás porque la mayoría usan wallets de  Lightning custodial. 

nostr:note1vu5eha5wyyagtqsyss8qwsfkxrschmxs4su38kaae32tdvzj5q4q4z7z2v  

 Do you have many channels? 

 3 

 Never ever had problems trading Monero even once.