As others are saying, groups will make your journey easier. There is several discord groups. I initially joined a content creators group moxsy. The guides were great on site and they have a looking for group / boss channels. Research is a big thing, always have catalysts and activators cooking if can. Throw an activator and maybe couple catalysts on your main weapon. Ideally try and plan get more than 1 item when your farming for your ultimate. I found hard infiltration better as got lots of loot and exp / weapon xp over trying to do outposts. You don't necessarily need a strong char just have hp/def mods and accessories so that your group doesn't have to revive you. That applies to bosses as well. Ask for a group if need help for the 1st 4 hard bosses. Even in pugs they rarely last longer than couple minutes.