You do not get to choose whether you are a dependent or not.  If you fit the criteria to be claimed as someone else's dependent then that person can choose whether to claim you but the choice is not up to you.  The rule is if you CAN be claimed then on your own tax return you must say you can be claimed as someone else's dependent.  

"Would I get more money....."

You will not receive stimulus money if you can be claimed as a dependent.  You cannot claim education credits if you can be claimed as a dependent--the parent who claims you is the one who can get the education credits.

You have not mentioned how old you are--that is important.  If you were under the age of 24 at the end of 2020 and a full-time student then you can be claimed no matter how much you earned.  If you are 24 or older at the end of 2020 then you cannot be claimed if you had at least $4300 of income (not counting Social Security).

Read the rules and see if you fit the criteria to be a qualifying child or qualifying relative:

WHO CAN I CLAIM AS A DEPENDENT?

You can claim a child, relative, friend, fiance (etc.) as a dependent on your 2019 taxes as long as they meet the following requirements:

Qualifying child

• They are related to you.

• They cannot be claimed as a dependent by someone else.

• They are a U.S. citizen, resident alien, national, or a Canadian or   Mexican resident.

• They are not filing a joint return with their spouse.

• They are under the age of 19 (or 24 for full-time students).

• No age limit for permanently and totally disabled children

  •      They live with you for more than half the year (exceptions apply).

Qualifying relative

• They don't have to be related to you (despite the name).

• They cannot be claimed as a dependent by someone else.

• They are a U.S. citizen, resident alien, national, or a Canadian or Mexican resident.

• They are not filing a joint return with their spouse.

• They lived with you the entire year.

• They made less than $4300  (not counting Social Security)

• You provided more than half of their financial support. More info

When you add someone as a dependent, we'll ask a series of questions to make sure you can claim them.

Related Information:

• Does a dependent have to live with me?

• What does "financially support another person" mean?

• Can I claim a newborn baby?