Thank you for your answer. The thing is I am a Russian by blood but I was raised in a different country so while I can speak Russian I can't read it. Had to translate your comment.
I tried to look up some stuff on youtube but Lu4 content is mainly mages, tyrants and etc. Hard to find tank videos for example. A lot of server specific changes creates a lot of confusion. For example Orc Mages recovering mana trough melee hits is still a pretty new concept in L2 terms. It was introduced probably around when Kameal race appeared. This server that is very classic and limited has this from what I have seen it and this changes Orc mage classes completely. I can take OL with heavy armor and pole then switch Soul Cry and Soul Guard then aoe farm ez. I have done that before.
I am a old L2 player but I pick classes depending on available skills and etc. Like I love PS but no 55lvl Summon on this server and etc.
The only thing I can do is ask and pretty much no one wants to answer. For example Warlord looks very loaded compared to other versions and servers. No offense but I am a Russian even if I can't read but Russians in L2 pretty much have barely any English skills in 2025. Feels like a elitist community that doesn't want to learn.