Server and Connectivity Issues

Had a weird day of playing call of duty today. Few concerns that I've had but never had a problem with this much

1. Joining lobbies with 2-5 players in them and never finding more people

1a. Backing out, searching for a match, getting put into those same lobbies, waiting for 5 minutes, nothing then backing out and trying again.

2. Getting shot behind walls and hit markers not registering some games.

3. Having horribly negative games (4-25, 7-30, etc) when I'm a 1.1 kd player. I'm never great im just average but there were some games today where literally nothing would register. I'd shoot in a group of enemies and get no hitmarkers. In the same games, I'd be running into walls, wallrunning to my death, etc all because of connection issues. I'm talking about freezing my screen up, and then respawning.

4. Getting put into the same lobbies. If I leave a match (because of connectivity issues) then why do I get placed in the same match again and again and again? There must be more than 11 other players playing this game so why do I get placed into the same lobby all the time? I recognize gamertags all the time. I never ever would play with the same player more than once or twice on MW2 and this game I'll be up against the same player pool every evening when I hop on. Is there only 100 people playing or less at one time, or do I just only connect to the same lobbies or what's the issue here?

Overall I feel like the servers and code for this call of duty just SUCK. Some games ill go 40-5, others I'll do 5-40.

And I know how frustrating it is to be that 5-40 guy who can't get a kill, let alone a hitmarker, because of a lag. Running in place. Bullets not registering. Wallrunning then freezing in place only to fall to your death. Jumping between 1 bar, 4 bars, 2 bars, 4 bars, 1 bar, 3 bar etc

I would have games in the same lobby where I would wardens 3 games in a row, and the next game I go 6-35. The players didn't get any better. I didn't get that much worse. I feel like honestly whoever has the better connection to the server wins. Period. Shoot second kill first etc.

What is the issue here? How can I make my connection more consistent? Am I just connecting to faraway servers that are making it exponentially more difficult for me to play to my stats?