Gen 1 lc charmander is probably the second worst lc fire type.It has Swords Dance though.
Charmander
Flamethrower/Fire Blast/Fire Spin
Body Slam/Fire Spin
Submission
Swords Dance
Flamethrower is strong accurate stab.Fire Blast is more risky,but does more damage.Fire Spin is gimmicky,but it can hurt,especially if you get a crit.Body Slam has a paralysis chance,and it can hurt if you set up swords dance.I would use another physical attack if it had more.Fire Spin is here again if you want to have a strong stab and a gen 1 wrap move.Submission is coverage,and can hit hard if you have a swords dance,but it can miss and inflicts recoil.And,it doesn't have a lot else.Swords Dance is your boosting move to boost your attack.
The only other options I can think of are mega kick because it can hit super hard,but it can miss.Double Edge is much more accurate,but inflicts recoil,and the chip damage will help it be koed,especially with its low defenses.Dig can be used,but a smart switch will make it useless.Overall,it sucks if you can't set up.If you can,then it can be ok.