Just wanted to share a few tips for NMS players
Play your solo challenges
Playing your challenges gives you free coins, players, XP and collectibles. You can use all these items to upgrade your team, or make free coins.
Example of collectibles: The Zero Chill promo had ornaments you could put into sets that gave players, which you could have used to used to upgrade your team and/or make coins.
If you want to know which challenges give free players, check out ucwarrior's thread.
Run your favorite NFL team's theme team (50/50 theme team)
Running a theme team gives a +2 speed and +2 acceleration boost to all your players with the team chemistry of the theme team you are running. This also makes playing Madden more fun because you get to use your favorite players in real life in MUT.
I run a 50/50 Panthers theme team, and even when I didn't have ever single good card that got panthers chem, it is much more fun than running no theme team.
Don't spend all your coins
Always have a handy amount of coins saved up; you never know when you may need it to buy training, a player, etc.
Watch the EA Twitch streams
Watching the GMM streams on gives you a free GMM pack which isn't very good but more importantly you get information about new cards, promos, and other info about MUT. Example: Today and Tomorrow if you watch the MCS stream, you can earn a free 95 Jalen Ramsey.
If you don't know how to claim twitch drops, please check out rka7731's thread.
Play WL and Solo battles if you have the time
Playing WL and Solo Battles give you rewards like coins and packs. I personally don't play these because I don't have the time and patience, but if you want to place Top 100 in solo battles and earn really good rewards, please check out ucwarrior's thread.
Do your daily objectives
Doing your daily objectives essentially gives you free coins. It gives you 1 random strategy item and 1 daily coin pack. The daily coin pack contains 2k-25k coin quicksells in it. These only should take you about 2 minutes to do. One week, I got very lucky and I pulled 3 25k coin quicksells, so I definitely recommend doing this.
Don't buy packs (except GAP)
The only packs you should be buying is the Get a Player pack for the daily objectives. Packs are a waste of coins, and they can put you in a loop of repetitively buying packs, which can lead to losing all you hard earned coins.
Do the SSKO objectives when a there is a new player
The SSKO objectives are very easy, and once you complete them you get a free player, which you can use (I recommend not using them) or you could quicksell for free training.
Do The Yard objectives when available
For some promos, there are The Yard Objectives, which can give you free players and packs.
For example: The most recent promo that had The Yard objectives was the Bo Knows promo, in which you could have earned a 91 NCAT Bo Jackson and a Legend Pack.
Ask questions in the MUT.GG Discord/Forums
If you have any questions about anything in MUT, don't be scared! The MUT.GG Discord is a great place to ask them. I can confirm I have become a much better MUT player from being in the Discord.