Although I main dark Samus, my play style is definitely a rush down player. Should I switch my main to someone Who fits my playstyle, try to learn samus’s Play style, or keep playing samus as a rush down.
(I am a stowaway from Brawl, so if you feel this advice is irrelevant or outdated, I understand.)
Remember the following about Samus:
1. She has virtually no safety on her approaches when the opponent braces themselves, unless she is moving under the cover of a projectile or has the opponent on the run. If her opponent is bent on holding their position or counter offending, they will be successful in most ideal cases. However, if she can get some momentum working in her favor, her potent projectile game works to maintain the advantage state, provided the enemy does not recover their defensive preparedness before she can deliver her next attack.
2. In the event that she is airborn above her opponent, her floaty aerial movement and delay in hitting opponents below her with aerial attacks both contribute to the danger in landing, so her optimal positioning is in line with or below her target.
3. If she waits too long and the opponent gets too close, she has almost no hope of repelling a methodically aggressive opponent. Sure, she has melee attacks, but her jab is unsafe on shield, and the first hit often knocks opponents away from the second hit; Ftilt has little knockback; Dtilt comes out quickly and is powerful for its type, but you sacrafice movement setting it up; and her smash attacks are short-ranged or easily release the opponent from their hitboxes (down smash excluded).
To answer your question, yes, Samus can rush, but she must do it Samus' way. She must keep the opponent losing ground with a fitting combination of projectiles and melee attacks. The moment she sees them giving a morsel of resistance, or pressure, she must abort the mission and focus on escape before the opponent converges on her position too rapidly for escape! Appropriately, this is somewhat like the gameplay of at least Super Metroid, which I have had the privilege of playing.