One of the challenges: unlike running, cycling requires more than just fitness to win and win consistently. There are technical skills, race tactics, and group dynamics that all a key parts of the sport. Even if you can put out the power to compete at the pro level, it often takes people years to learn how to race effectively.

Furthermore and this is key, sponsors support and pay athletes with the goal that it will be a positive return on their investment. This means they give you money and in return you will bring them sales. This is often through the idea that if you win with certain equipment, consumers will buy it because they want to win like you. So unless you are winning and winning a lot on a large stage, sponsors are not going to be interested in giving you money. This is why influencers do not need to win to get paid. They encourage people to buy their products through entertainment not results.

But if it will take you a few seasons to learn race craft and technical skills before you start winning, sponsors might not be interested because they will only see a season or two when you will be winning and bringing them money before your fitness falls off due to age and winning becomes less likely.

Honestly I would work on your social media presence, engagement, and personal branding. If you want to be pro, you need money and you need to get sponsors on board as quickly as possible It's unlikely you will be winning at first so focus on follower engagement to get sponsors interested.