Check out YouTube tutorials and youtubers like Mogamu they help a lot. Also Excalibur is a frame that I'd keep and learn how to mod since he is a good Endgame frame for pure DPS. Trust me the game is very slow at first and there is absolutely no shame in looking up tutorials on stuff like modding and how weapon blueprints work for crafting. The game throws a couple curveballs at you due to the slow progression at first since frames take 72 hours to build and weapons take 12 hours to build but I eventually learned. Also look up what a potato and forma are since you'll need to know what those are as well.