How to prevent people from rugging my token? Should I even consider pump.fun?

Hello, I’m about to launch an experimental project token, but I have only $120 available as a budget. I have the following questions.

1. If I deploy the token with this liquidity to a liquidity pool (like Orca or Kamino) will people try to attack the token, buy manipulating the price and buying all the liquidity (so they pump it), only to dump it shortly afterwards? If so, what is my best strategy to defend against that, provided that I can commit only $120 for liquidity? Perhaps inserting slowly new tokens at the pool, rather than providing all of the liquidity at once? (I’m not if that’s even possible…)

2. If I do decide to use a servlikce like pump.fun, how exactly the liquidity works? Do I issue/mint the tokens to the marketplace, or am I instead required to buy my own tokens?

I want to act in good faith and I want this to be a development learning experience with SOL for me, I am not willing to sell anything, rather than watch how a token grows and what are the technical/market difficulties involved.

Thank you and apologize if my questions a little bit unclear.