Hey Parvo! I think our guild would be a great fit for you and your friends, we are currently recruiting to fill up our raid team and have spots open for tank & heals. We have had success in mythic raiding but got a little burnt out from it, so we are focusing just on Heroic this expansion. Very laid back atmosphere but we progress quickly. Below is a link to our forum post. Lets talk some more about it in game!
https://us.forums.blizzard.com/en/wow/t/abasic-heroic-raiding-rbgs/759606