try adjusting the clutch pedal first.. dapat hindi tukod and adjustment and dapat yung pag tapak mo ng todo sapat lang para pumasok ang 1st gear... you can shift the gears as soon as the pressure plate disengages the clutch disc kaya no need to push it to the maximum range of the pedal..

in common terms dapat yung clutch adjustment mo eh MABABAW lang yung tipong pag tapak mo pasok ng 1st gear dapat konting release lang eh kagat na agad ang clutch..

also possible cause is yung clutch master and slave mo need to replace na.. pag umiinit na yung fluid nag expand na causing your clutch to stuck-up..

worst case is sira na yung synchronizer mo kaya hirap na pumasok sa 1st and reverse