Why are you buying? Just to get your relic? Or to get it and progress into the coil?

If you want to do coil, youre gonna need a team of 7 other people. So if you need a team for the coil, why not get this said team together to help you beat titan?

I dont understand the logic in buying the fight. The coil is disgustingly harder than titan, so if you plan to pug the coil, you will be sorely disappointed and more frustrated than you currently are with titan.

If you are not going to pug the coil, then get that coil team to help you beat titan. Titan should be no issue for them since they have already beat it. You said you have pugged it over and over, which indicates that you do not have a team, in which case you need to start building one within your fc and if you are not a part of one, join one.