I can't handle tilting and losing rating

Just keep playing through the tilt. Your rating will tank, but that's how you train yourself to no longer care about your rating. Unless you are playing chess at a high level, your rating does not matter. It's fun to set goals for yourself, but when those goals start affecting your enjoyment of the game they are clearly having an adverse effect.

Tilting just means you are no longer focused on the chess.

If you are worried about "why am i sucking", "it's not fair that i got flagged", "he plays cheap" etc., then your attention is not focused where it should be, that is, on your chess moves.

You only have so much attention to give. If you are giving 90% of your attention to your emotions, you only have 10% left for your chess. Hence, the suckage.

I recommend playing only unrated games. That is real chill, where losing, winning and rating does not mean a thing, only having a cozy time with the essence, namely chess.
Cheers

if there are no stakes, you aren't living.

The solution to tilt is easy. Literally just stop caring. It's that easy, and yes, you can just do that at will.

not many people finds their life's ambition and dreams in chess. its probably too late for you anyway to be a pro and make a living so all there is left to do is enjoy it, or quit. its tough to lose at chess because basically you get dominated by another individual in something you enjoy. Not cool! Sometimes, the other player cheats, just gets lucky, or does not have a distraction you are dealing with, like at work, romance, etc. So in the end, losing is not necessarily being "dominated", rather it is an "everybody got to die sometime" (Sgt. Barnes, Platoon) moment.

Tilting is somehow like saying hey, tilt, what, give me my normal performance back. But then you see there is tilt, so accept it is not in your power and come back later. It starts as a passion but you can do as you wish.

When you play do you make a concentrated effort to focus only on your game? For example have you turned off all other music/tv/noise in your home? Have you organized your personal life so you do not have people interrupting you when playing? Have you closed out all other apps and internet windows other than the chess game you are playing?

One can play way below their strength if they are inconsistent about playing in ideal conditions. Also, how many of your games are you reviewing? They are the most important learning tool you have is to patch up your own weaknesses.

Well, now I am at 1901. Not too bad. I feel like that now my blitz is the best it has been.

well i too tilt over the games, not really for ELO or losing, but when i blunder badly. Solution: if your tilt gets worse day by day, i recommend you to quit chess for one week or 3 days, just to clean up your brain from that, it helped me alot :)