In the 5 hours it took to play with randoms, you could have googled how to beat it and built the Pokemon with that time. I helped my six year old son build up an Amarouge to level 100 with candies from terra raids, hunt the TMs in the world for the moves, but a life orb, use any bottle caps he had earned on defense, hp, and special attack, and then used some hp ups and proteins. Did the strat that everyone is doing, beat it in one try. Took a few hours to build up the Pokémon but it’s done now. It’s a 7 star raid and supposed to be challenging. I know it’s frustrating, but use the resources you have and spend time trying to solo it with any Pokemon all the YouTubers recommend.