Indecisiveness is a bitch. (Need help deciding on what roles to main and maybe some general advice.)

So I have been playing League for almost a year now and I finally decided that I want to play ranked. I have heard that one of the better ways to get good at the game was to find a main role. However, I have been playing every single role and I can say that I want to main all of them except jungle and I have been told that being a fill main is bad for if you want to improve. Most people just say that you should main your favorite role or what you are best at but for me that advice has gotten me nowhere fast. Honestly my only option is to either become a fill main or get some help on deciding which as you can see I have opted for the ladder. If it helps I plan on maining 2 of these roles and quite possibly 3 if it comes down to it. What I can do right now is list all of the roles that I am considering so here are my options in no particular order:

Top Lane:

Champions I play in this role: ?? ??

Champions in Consideration:

Details: This role is quite a fun one to play in my opinion but the one thing that makes me unsure about this role is that it is harder to be helpful to teammates than other roles which is why I mostly play tanky and juggernaut champions top lane. I also have trouble figuring out a good champion pool for top lane but that may or may not be fixed depending on if I like Kled or not.

Jungle:

Champions I play in this role:

Champions in Consideration:

Details: No, just no. If you must know why it is because for one thing Rammus is the only jungler I can play in this role and for another I am super bad at this role when I'm not Rammus as in 0/10 Wood 5 Yasuo bad. So no, it's not okay.

Mid Lane:

Champions I play in this role:

Champions in Consideration:

Details: If I ended up picking this as a main role I would be able to start playing ranked RIGHT NOW actually. However, the reason why I am unsure about this role is mainly because I might find the other role more fun and this is even further driven home by the fact that I don't really have much incentive to play mid lane besides "You can carry the game hard."

Bot Lane:

Champions I play in this role:

Champions in Consideration:

This role seems to be the one that I am best at out of the 5 options and Twitch is a really fun champion in my opinion. However, I have heard a lot of thing about adc that makes me very hesitate to pick up this role such as there being constant meta shifts and being one shot by every other champ in the game. While I could deal with the one shot thing, I don't know if I would be able to keep playing Twitch if the meta shifted heavily out of his favor who is the biggest reason for me wanting to consider maining adc.

Support:

Champions I play in this role: ?? ??

Champions in Consideration:

Details: Honestly, my most familiar role out of the 5. I have been playing this role ever since I was a fresh noob. Honestly, I don't see any reason for me to not secondary this role (Especially since auto-fill is a thing). However, while this would be a great role for me to secondary it is not really a role I want to main because then I would get it almost every game and get bored of it after playing it for so many games in a role and besides, I want spice things up every now and then and not just be stuck to one role.

Summary: These are all the roles I have available to me and I would love some feedback on this because I have been doing this for so long with no progress and no input. As a side note, I am not forcing myself to play any of these roles or champions (besides Jungle).Also, I left a poll so that everyone can leave some input. Thanks in advance.