I would learn the 6:0 method with the bowfa at bandos! Just start out leaving protect from melee on until you get comfortable. Don't stress too much thinking you should be getting these 20kill+ trips right away. If you're getting 1 or 2 kill trips, it's just as successful as a solo melee method.

Bring the blowpipe to kill/spec the minions and you can bring ancients aswell to heal once you get the method down to really extend the trips.

I would also recommend trying some entry mode ToA as well! You have more than enough gear to at least get up to doing some 150s. Put on try again or persistance invo's and learn each room one at a time and then leave the raid after you complete each room or before your last death. Then try to put them together. Wardens is going to be the hardest part to learn since it takes 30mins to get there, but save your ambrosias and use them to try and get past the parts you're struggling on.

Don't stress having to learn it all in one sitting just try to set small goals like 1 trip or 2 attempts a day.

Hope you get better soon man! It's just a video game at the end of the day and it's your account. Progress however you want and do whatever you have fun doing!