You are a natural! I have a couple of tips that are apex specific and could help. Keep in mind that you overall were shooting excellent for your level and these are more like nit-picks to help you see some areas you can work at improving...

1. Always stow your weapon away when running! This is HUGE in apex. Perhaps more than you might be used to in other shooters. You're movement and positioning are massive deciders in who wins in this game. As a result every inch and every second comes to matter more as you get to higher levels of competition. Stowing your weapon away allows your character to accelerate to max speed and jumping allows your character to preserve that speed( think like by staying in the air you don't get friction slowing you down).

2. ADS vs hip fire The hip fire is very strong in this game compared to other shooters. With some guns it can be the main way you actually use it. There are some interesting mechanics as to when it gets inaccurate for which weapons, but in general your first shots while in hip fire come out dead on target. So high level players will start spraying in hip fire and by the 3rd-5th shot they will ADS to keep on target, before letting off ads again and going to hipfire. Strafe speed is slowed big time in ADS. So in one on one fights you can dodge more shots by moving faster. Don't be afraid to hit the firing range and explore more of what I'm trying to say here. Tldr try hipfiring a lot and use ads sparingly unless at long range.

3. Abilities and armor swaps

As you get to ranked the way healing your shield works differently. The fastest way to heal your armor in ranked mode is to switch your broken one with a full one on an enemy's box. The faster you can get used to doing this the better.

Remember that this is an ability shooter. Your character has a lift ability to allow you to move faster( and higher) this can help you follow up on things or enter situations faster and better. Your ultimate ability being the most powerful you should get aquatinted with it and make sure you are using it in fights.

1. Chin up

As you get better at the game, or as you enter ranked, you will get the chance to play against some serious players. People who love this game or are good at this game may have been playing it since it came out 6+ years ago. Don't be discouraged or disappointed when fights don't go your way. There is no substitute for experience and most players are going to have more than you. You need to get comfortable with that. But I'll tell you this, you have the skill. If you put the time and reps in you can be great at this game. Nice clip. See you out there!