Can't Retain Emerald ELO (Hecarim OTP)

Yo, I won't make this a ranting tangent and I will just list my my concerns about my current situation as it relates to League of Legends.

I am lowkey hardstuck. My mental, my sleep schedule, etc is all ruined since this season has started. I won't lie, I'm actually in fear of not being able to get back to emerald by the end of split. I've been perma arguing with EUW people in discord about who's better and what not (mind you, none of us have even graced mid-masters). I don't know what to do; I Honestly don't.

Do I switch champs? or do I keep OTPing Hecarim
Do I quit league for a while? or do I keep spamming games
Do I pay for coaching soon? or do I thug it out and learn on my lonesome
Should I care about rank? or should I just completely reset mental and just play for fun

Part 2:
What champs do I play if I'm switching?
If I quit league for a while, what to do to get better?
Coaching? its so expensive for no reason, even chall peaker nobodies over-charge for trash coaching sessions/
Caring about rank? I feel like it's something to prove to myself that I can hit challenger one day.

my op.gg : https://www.op.gg/summoners/na/speedy%20reformed-chall