A former LCHS student was accepted to UC Berkeley. This student was put on Academic Probation at Berkeley for not properly documenting their research or citing sources. Assuming that the student will actually finish college (almost 50% do not), how do you think that probation will look on grad school applications?
You will never regret the time and effort you spend in high school learning to research and write well. Take "Works Cited" pages seriously and learn the tricks of parenthetical and in-text citations so you do not end up in a similar position. There is no excuse for plagiarism.
So much better than Wikipedia. Britannica School articles are written for students.
If you do not want to spend the time analyzing a Wikipedia page, use Britannica School instead. As high school students, you should be moving away from general encyclopedias as sources and only use them for background information that could be considered common knowledge.
We don't argue that this level of scrutiny is necessary for the average, everyday searches we all do for quick information. This kind of analysis is only crucial for researching matters that are of great importance to you, like your academic work in high school and college or, as an adult, crucial decisions. Would you choose a college, select a car to buy, or pick a political candidate based only on Wikipedia? We hope not.
In other words, if you have no idea what a Tesla is, Wikipedia is a great place to start. Should you buy one? Start with the Consumer Reports database instead. This is the same process you should use for academic work but with more details like citing your sources.