Controlling the range with these 2 weapons is hard.
Playing with lock on, helps a little but depending on the monster and the part, this creates another problem for missing many attacks.
They should create another controle to slide or simply put the weapon away and walk or run, like in the main games… even tho I have no ideia how they could do this, it would help controlling the character.
Honestly it was never an issue for me on lance. I did have this issue with gun lance though.
I would simply intentionally dash with lance and jump to try and get extra travel distance. Usually would work in my favor when i do this as im almost alsays in reach ( unless agro is on a ranged dps player aacross the map… then 2 dashes)