Hello there,
Short answer. Not getting "enough" to buy a whole Bitcoin right now is completely fair. Actually, not many people decide to go "all in" like that. Buy as much as you can, even for $50/100. It's a start.
The information on the Internet is a lot, true. And you really don't need to get overwhelmed. Feel free to check this guide How to Invest in Bitcoin: A Simple 5-Step Guide [2021] I truly hope, it would give you some ideas and clear lots of things.
Of course, choosing the precise site is a matter of choice, and could be a hard decision. Make sure to check before hopping in.
Good luck
*Answering a bit late, but still... better late than never.