But i just create wallet for doge coin

Should i buy coin now?
Every huge hodlers of dogecoin or users from pump-dump groups be like, "Buy Dogecoin as it'll hit $1" and FA (Fundamental Analysis) be like,"Am i joke to you!"

Better to stay out from those coins/tokens which don't have that much strong fundamental use-cases in the long run. Instead of taking entry into dogecoin, better to take trades on other alts according major events or TA, IMHO.
Yep, this is very important. maybe some day trades consider this to be the opposite because they can get profit easily. Especially with the current ramifications of Twitter, plus Elon Musk who continues to show his support for Dogecoin, I think from a profit perspective, Doge can be a good investment if you buy and sell it properly