Most players practise by queueing. That works for aim and for nothing else, and it is why the same three mistakes survive hundreds of hours. Marvel Rivals gives you four practice surfaces, and only one of them is a ranked match: the Tutorial set, the Practice Range with its simulation pads and shooting gallery, Practice vs AI at Easy, Medium and Hard, and Doom Match. Use them in that order and the ranked games stop being where you learn.
Step 1. Days 1 and 2: pick three heroes, not nine
Choose one Vanguard, one Duelist and one Strategist and commit to them for the fortnight. Three heroes played deeply will carry you further than nine played shallowly, and with six distinct names banned in every game from Gold III upward, a one-trick is a liability while a three-trick almost never gets locked out. Pick a Strategist you genuinely like: twelve heroes cover the role for the entire 54-hero roster, and queue times reward you for it.
Step 2. Days 3 and 4: read both loadouts for all three
Open the Heroes menu and read the Base Effect and Enhanced Effect on each of your six Team-Up loadouts. Write down, in one line each, what you get without the partner. That line is the version you will have in most games. Then take each hero into the Practice Range, spawn the named partner on a simulation pad, and watch what the Enhanced Effect actually changes. Guessing at this from a video is how people end up drafting for a bonus that turns out to be a 25 percent slow.
Step 3. Days 5 and 6: learn one map properly
Take the map you lose on most. Walk it in a custom game or an early casual queue with Chrono Vision on, and mark three things: the high ground you can reach without a mobility cooldown, the cover that turns yellow, and the two entrances to the mission area furthest from the obvious one. That is 20 minutes of work that survives the whole season, because map knowledge does not get patched.
Step 4. Days 7 to 10: play with one rule per session
Queue normally, but hold yourself to a single rule for the whole session. Session one: never enter a fight first unless you are the Vanguard. Session two: call every ultimate by name before pressing it. Session three: touch the objective the moment a fight tips. One rule is enforceable; a list of seven is not, which is why "play better" never works.
Step 5. Days 11 and 12: run the fault-finding table
Go back to section 09 and find the symptom that matches your last ten games. Be honest about which row you are: the answer is almost always "entered first" or "chased kills off the point", and almost never "my team". Apply that one change for two full sessions before you look at another.
Step 6. Days 13 and 14: build the swap rule
Decide, before you queue, what you will do when a matchup goes wrong. The rule that works: at low charge, swap hero on your next death; at high charge, swap Team-Up loadout instead and keep the bar. Half your ultimate is a real cost, and people pay it every game without ever noticing they did.
What to expect
Two weeks of this will not move you two tiers, and anyone promising that is selling something. It will remove the deaths that are not outplays, which is most of them, and it will mean the next balance patch finds you reading a list of numbers rather than losing five games to figure them out. The season reset takes six divisions back every time regardless; the only thing that compounds across seasons is the part you actually learned.