Your game card is probably loose don't move it around that much.
get an everstone.
Keep walking with them, and your friendship with them will increase.
you keep on battling the gyms
check your map and keep looking
There is no best Pokemon on Pokemon HeartGold.
frezzer not frezing
there is no Pokemon Mansion in Heartgold.
They are not in Pokemon HeartGold
Same as always just keep searching and searching
where is the pokemon transfer lab in heartgold
No, but you can trade Pokemon only in HeartGold to Black
That is impossible in Pokemon HeartGold and SoulSilver.