It's so hard when you compare! We had DD 6mos before COVID and so just as we were emerging from newborn stupor, lockdown happened. I actually feel really fortunate that we had the peace and quiet to do our own thing. Finding it much harder now that are going to play at other people's home and, as you say, comparing our toys to others'. I know it's tricky, but keep your eyes on the road!
DD has newly turned 2. We have similar types of toys to you and she has wanted for nothing! As others have said already, less is more in terms of toys at one time. We have 3 or 4 different toys and a selection of books out on her shelf at any one time, swap them once a week-ish. I keep an eye on what she is interested in and swap over anything that hasn't been played with so much. This keeps things interesting for you both and gives you a stash of toys to call on if the day is dragging.
Birthdays and Christmases are obviously good to add a few new bits and pieces. Second hand toys from marketplace, charity shops, gumtree etc help budget go further. If you are lucky enough to have some family interested in giving gifts, you could have a lfew suggestions up your sleeve.
Join the library if you haven't already - great to supplement the books you own. DD loves choosing new books to borrow.
I also find increasingly that DD is happy being involved in tasks round the house - setting the table, dusting, unloading the dishwasher, putting clothes in basket/washing machine etc.
And one last thought - once or twice we have bought a toy that she has loved playing with at a friend's house and she hasn't looked twice at it at home. Sometimes the novelty of someone else owning it is what makes it more exciting!