Seeking advice from people who got into cybersecurity who DID NOT have any predisposition or natural talent for it

Ive had an incident response job for 2 years and just started a cyber defense course on tryhackme so i can get a tier 1 analyst job. I barely started and already am more frustrated than ive been in months because i just cant seem to understand the osi model. I work with tier 1 analysts and osi doesnt seem relevant. Is it? If it is what helped you understand it? What helped you get ahold of any of this? I already did a bootcamp and everything went over my head. I only passed because i looked up the answers on github to my assignments. I feel like a lot of this is just genetic honestly because computer shit just doesnt click with me but i need a work from home job and cant afford more school if i want to switch careers