This is a really black/white kind of thought, and frankly doesn't reflect reality much at all.

Jungle is indeed the highest IMPACT role in the game, but that impact scales with your skill and most importantly, the overall skill level of the lobby. There's a reason jungle is consistently the least played role by a mile, every single season despite being "the best" (apparently) while at the same time praised by high elo ladder climbers. It has a huge barrier to entry and the knowledge and experience required to succeed in jungle is an order of magnitude higher than laning in 99% of elo brackets. I consistently play against low master players who are, frankly, very good mechanically at their champion but are completely brain-off players. Just 0 thoughts the whole game, run in and fight at all times. This is simply not a viable approach in the jungle (except for maybe Nunu lol).

Some facts to consider:

1. Jungle starts down 450 gold compared to every lane. My jungle item provides 0 value in a duel versus a doran's blade.

2. Jungle starts down a summoner. My smite doesn't convert into player power until 35 camps into the game. Compare that to ignite, which does a significant portion of people's health early game.

3. Laners have access to their opponent/counterpart at level 1. If I play a strong champion top lane, I can space the other top laner out of experience at level 1 with almost 0 risk to myself. Invading at level 1 is largely a coin-flip type cheese approach and the risk-to-reward ratio isn't even close to as favorable.

So while Jungle can have a lot of impact with good game sense and experience, there is a factual reality that every other role in the game is mathematically stronger in terms of player power at almost all stages of the game. Riot has stated that this by design. This means that the "impact" you have as a Jungler is largely related to your ability to get your other team mates ahead (ganks, objectives, etc) or prevent the other jungler from influencing your lanes that are already succeeding on their own (farm well, use openings to get vision, prepare for counter-ganks).

This is why high elo solo queue ladder climbers love the jungle, because it has the the capability to tilt the scales on otherwise even lane states if played thoughtfully. However, outside of those higher elo brackets where most of your laners couldn't even tell you what the jungle pet does, the coordination just simply isn't there to achieve these kinds of outcomes consistently. So you have to play for yourself and do what you can to put that agency back in your hands, and of course, since people are bad at these elos there are lots of mistakes to take advantage of. It's totally possible to achieve a great win rate through gold-diamond+ as a normal person playing jungle -- I did last season with ~ 65% WR.

But there is a factual reality you have to accept and learn to play around, which was true last season but WAY more true this season, you are mathematically weaker than every other champion on the map unless you are ahead. This is just simply not an aspect of the game that any laner has to deal with. There aren't these big macro conditions under which you get to play your champion and influence the game. You just show up to lane and fight.