I like your approach to changing your diet. The more healthy food you eat, the less you will want to eat the less-healthy things. So that part almost takes care of itself in the end.
When I was looking to improve my diet (and also to lose some weight), two things that helped me a lot were 1.) committing to eating only homemade food, and 2.) committing to eating a salad a day. DAREBEE has Challenges to help you track these things:

(I see that you already do a lot of cooking. So you've already got a good start on this one.)
Of course, in 2024, it is pretty much impossible to eat 100% homemade all the time. So you decide in advance what exceptions you will allow. (For example: I allowed myself to keep eating commercially-prepared cheeses and hot sauces. But I switched to making my own salad dressings.) Then you do the best you can within the goals you have set for yourself.
The more we prepare our own food, the better control we have over the quality of that food. It can also really help with reducing the less-than-healthy eating without outright bans. (For example: Say you really love cookies. You don't want to say cookies are forbidden, because then you will just crave them all the time and probably give in at some point and eat them. But if you bake your own cookies, you can make them with less sugar than you would find in store-bought cookies. You can bake them with whole wheat and/or nut flours instead of refined wheat. So you still get to eat the treats that you love, but you've made them healthier.)
For my salad-a-day challenge I allowed myself to put pretty much whatever I wanted into my salads (fruit, cheese, nuts, seeds, fish, grains, etc.), so long as the bulk of the salad was some kind(s) of green vegetable, and any dressing was homemade. I had my salad for lunch because, at the time, I was responsible for feeding my father most days and he would not go for eating just salad for dinner. (For lunch he mostly just ate a hard-boiled egg, or a handful of peanuts. So I would give him that and then make my own lunch anyhow. So switching out my old lunches for a salad was a lot easier than trying to do the salad for dinner when I would also need to cook something for my father.) I also challenged myself to eat a different salad every day for the first month, so I would not get bored. Then I asked my fellow Bees for suggestions of their favourite salads. I learned some tasty new recipes this way!
On the exercise front: you are already doing the most important thing by being consistent! Adapting as you need to, but doing something every day is key to long-term success.