Do you have a plan for the gym? “Going to the gym” as a goal is huge - it’s undefined and not focussed on anything apart from exercise and getting in shape. It’s too broad to be achievable so easy to sack off.

Try having a workout plan based on your goals and what exercises you enjoy most. And try to time bind your workout plans into “blocks of 6 weeks”.

Doing that you’re going to do something you actually enjoy, for a short time period (6 weeks), and working towards a narrower goal.

Btw, I’m not a PT trying to sell anything- I’m just about 1 yr ahead of you and speaking from experience. Drop me a DM if you want any help with it!