Guild Wars 2

I’m total noob in sPvP and just tried it wth my engi. I tried grenades and flamethrower with elixir gun and i feel that i deal not enough damage and not hellping my team, also i die very fast even when focusing on toughness and con damage. So is there any guides or builds which can help me become better?

Engineer has a pretty steep learning curve. You might want to try a build with one or two kits before jumping into a 3-kit build. 3 kits can be amazing but also requires a lot of micro, invisible cooldown tracking, and apm.

A fairly simple build to start with is HGH grenades:
Pistol/pistol
Elixir B, Elixir S, Grenade kit
Elixir H or Healing turret as your healing skill
Rabid amulet
Might duration runes
Sigil of battle
30/0/0/30/10 (shrapnel, incendiary powder, grenadier, fast-acting elixirs, cleaning formula 409, HGH, speedy kits)

It’s a solid build with good utility through stealth, invulnerability and stability. High direct damage with precision and might stacks, high condition damage through pistol skills and shrapnel grenades. It goes down quickly to focused fire and can’t stay in close range long. It has trouble landing damage vs. ranged opponents.

Some more advanced builds can be found from these tournament players:
https://forum-en.gw2archive.eu/forum/professions/engineer/post-nerf-replacement-build-for-bomb-nade/3328285

There are also full bunker engineer builds, which excel at decapping and surviving but lack team support:
https://forum-en.gw2archive.eu/forum/professions/engineer/PvP-Roflbunker-Build/3352389

30/0/0/30/10 rabid amulet engie
explosives-forceful explosives, incendiary powder, grenadier
alchemy-invigorating speed, backpack regenerator, automated response
tools-speedy kits
grenade kid, bomb kit and you can choose the third. i usually go with tool kit because the pull makes me feel good but you can take elixir s or elixir gun or rocket boots and they will all fit in some way. i use 5 nightmare runes and a necromancer rune (maybe there is a better rune setup but idk) and geomancy and corruption sigils.

Its a little demanding mechanically but once you get used to all the button dancing its actually a little faceroll(even tho it as an high skill ceiling), but its very effective and fun.

EDIT: regarding the post above mine; While hgh is simpler in mechanics, it’s a lot harder staying alive and with all the boon steal going around it’s not really a good build these days.